Geometrical instruments – Straightedge type – Rules
Patent
1997-09-08
1999-07-20
Bennett, G. Bradley
Geometrical instruments
Straightedge type
Rules
33 1B, 52105, G01B 300
Patent
active
059242132
ABSTRACT:
The numerical measurement indicia is placed along the width and length of sheet material like plywood or drywall to aid in cutting and nailing to the frame. The linear construction material also contains numerical measurement indicia in a lengthwise direction to assist in cutting and affixing to other structures.
REFERENCES:
patent: 4301596 (1981-11-01), Sedlock
patent: 4779346 (1988-10-01), Schafer
patent: 4858402 (1989-08-01), Putz
patent: 4870799 (1989-10-01), Hassan
patent: 4927696 (1990-05-01), Berg
patent: 5282317 (1994-02-01), Carter et al.
patent: 5673489 (1997-10-01), Robell
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