David A Pearce

US Patent:

7503072, Mar 10, 2009

Filed:

May 17, 2001

Appl. No.:

09/859915

Inventors:

Aidan T. Hughes - Bellevue WA, US
David Barnaby Pearce - West Palm Beach FL, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04L 29/00
H04L 9/00

US Classification:

726 26, 705 51, 705 59

Abstract:

In one embodiment, the invention is a 64 bit hardware ID (H/W ID) for tying a software product to a particular computer to prevent software piracy. The 64 bit hardware ID represents ten different components of the user's computer: the CD-ROM device, the disk adapter, the disk device, the display adapter, the first drive serial number, the MAC address, the processor serial number, the processor type, the RAM size in Mb, and the SCSI adapter. Each time the software product is opened, the expanded H/W ID is compared to the hardware on the computer to determine whether a predetermined minimum number of components match. In one embodiment, the expanded H/W ID allows for expansion of the user's computer because so long as the component originally listed in the expanded H/W ID can be found on the computer, then that component matches the expanded H/W ID. Typically, seven out of ten components in the expanded H/W ID must match the computer before the software product will fully operate.

US Patent:

7565323, Jul 21, 2009

Filed:

Sep 23, 2003

Appl. No.:

10/668580

Inventors:

Aidan T. Hughes - Bellevue WA, US
David Barnaby Pearce - West Palm Beach FL, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06Q 99/00

US Classification:

705 50, 710 10, 711117, 700 79, 365201

Abstract:

In one embodiment, the invention is a 64 bit hardware ID (H/W ID) for tying a software product to a particular computer to prevent software piracy. The 64 bit hardware ID represents ten different components of the user's computer: the CD-ROM device, the disk adapter, the disk device, the display adapter, the first drive serial number, the MAC address, the processor serial number, the processor type, the RAM size in Mb, and the SCSI adapter. Each time the software product is opened, the expanded H/W ID is compared to the hardware on the computer to determine whether a predetermined minimum number of components match. In one embodiment, the expanded H/W ID allows for expansion of the user's computer because so long as the component originally listed in the expanded H/W ID can be found on the computer, then that component matches the expanded H/W ID. Typically, seven out of ten components in the expanded HIW ID must match the computer before the software product will fully operate.

US Patent:

44681585, Aug 28, 1984

Filed:

Nov 29, 1982

Appl. No.:

6/445116

Inventors:

David R. Pearce - Bremerton WA
Archie S. Lien - Poulsbo WA

Assignee:

The United States of America as represented by the Secretary of The Navy - Washington DC

International Classification:

B23B 4100

US Classification:

408 16

Abstract:

Apparatus for inplace refinishing of the annular seating surfaces in top ded ball valves which comprises a locating ring adapted to be mounted on the top surface of the valve housing. An alignment gage is provided for precisely positioning the locating ring. A cutting apparatus is mounted on the precisely positioned locating ring. The cutting apparatus includes a carriage plate for mounting on the locating ring, channel-forming means mounted on the carriage plate and a cutting tool having a housing adapted to side in the channels and having a cutting head oriented to cut the seating surface at the desired angle.

US Patent:

20180204545, Jul 19, 2018

Filed:

Aug 4, 2016

Appl. No.:

15/229073

Inventors:

David PEARCE - Granada Hills CA, US

International Classification:

G10D 7/12
G10D 9/02

Abstract:

A chromatic harmonica with reduced air leakage in which a flexible mouthpiece replaces the conventional rigid mouthpiece, and a low friction valve slide replaces the conventional valve slide, thereby allowing the low friction valve slide to move horizontally when played without binding, and which eliminates the need for a gap between the mouthpiece and valve slide through which air leaks. For the chromatic harmonica with a flexible mouthpiece to function properly, a new button configuration is added. The button is disposed in the rear portion of the chromatic harmonica. A bar is attached to the button at one end of the bar, and the other end of the bar inserts into an opening in the valve slide. The button further comprises a cylinder, around which a spring is disposed. The cylinder inserts inside of a hole on a side of the chromatic harmonica adjacent the rear.