Robert A Wolf

US Patent:

42418674, Dec 30, 1980

Filed:

Jun 19, 1979

Appl. No.:

6/049973

Inventors:

Robert H. Wolf - Barrington IL
Madeleine L. Dugas - Palatine IL

Assignee:

Graphic Calculator Company - Barrington IL

International Classification:

G06C 300

US Classification:

235 85R

Abstract:

A novel product selection slide rule is disclosed which allows the user of the slide rule to quickly determine which product from a grouping of products is best for a particular condition or property which he selects. The applicant's slide rule isolates the product best suited to the application out of a multiplicity of products and possibilities. The novel slide rule comprises a front and back cover with the front cover containing a plurality of viewing apertures and a plurality of stylus apertures. Between the front and back cover is positioned a central filler and a plurality of movable elongated slides are positioned within an elongated opening in the central filler. Each slide has formed thereon predetermined zones of different indicia for viewing through a plurality of viewing aperatures on the front cover.

US Patent:

39993264, Dec 28, 1976

Filed:

Aug 6, 1975

Appl. No.:

5/602234

Inventors:

Robert P. Wolf - Chicago IL

International Classification:

A01K 8300

US Classification:

43 427

Abstract:

A snag-hook particularly adapted for salmon fishing having barbed tines having a central stem terminating into an eye for the attachment of a fish line thereto. A weight is provided with slots and a central recessed portion to receive the stem and tines of the hook. The weight extends in an opposite direction from the eye of the hook. A retainer member in the form of a resilient ring having overlapping ends detachably mounts the hook to the weight and accommodates the interchangeability of weights of different sizes and different hooks for different snag-fishing conditions.