Patent-drafting aid

Details Patent-drafting aid Patent-drafting aid

1987-09-03

1988-09-20

Haroian, Harry N.

Geometrical instruments

Miscellaneous

Light direction

33DIG1, 33435, B43L 1300

Patent

active

047715430

ABSTRACT:
A device for facilitating patent drafting comprises a base sheet, and a second sheet to which the drafting medium is affixed, the sheets having magnetic properties to maintain the base and second sheets in an alignable relationship with each other, the second sheet being transparent in some areas. Guidelines on the base and second sheets permit ready alignment of patent drafting requirements and to commonly used drafting angles. In one embodiment, the magnetic means are positioned to cause the sheets to maintain alignment at commonly used drafting angles.

REFERENCES:
patent: 397147 (1889-02-01), Sperry
patent: 3093919 (1963-06-01), Holtz
patent: 3456352 (1969-07-01), Bowen
patent: 3618137 (1971-11-01), Bassett
patent: 3721007 (1973-03-01), Banner
patent: 3739478 (1973-06-01), Elenberger
patent: 4366626 (1983-01-01), Livick
patent: 4442605 (1984-04-01), Weihe
patent: 4515077 (1985-05-01), Davidson
patent: 4536732 (1985-08-01), Schindl

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