Geometrical instruments – Miscellaneous – Light direction
Patent
1994-09-22
1996-04-30
Will, Thomas B.
Geometrical instruments
Miscellaneous
Light direction
33562, G01B 300
Patent
active
055113168
ABSTRACT:
A stencil for cutting sandpaper and it is formed from a sheet of plastic transparent plastic material having four corner lips extending down from the corners of the sheet. These corner lips have inner edges that define a rectangular recess for receiving a stack of standard sized sheets of sandpaper. Linear slots and arcuate slots in the stencil allow the sandpaper to be cut into two equal parts, three equal parts, four equal parts or circular disks having 6, 7, and 8 inch diameters.
REFERENCES:
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patent: 2434566 (1948-01-01), Hulsmann
patent: 2487234 (1949-11-01), Gore
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patent: 2690017 (1954-09-01), Neill
patent: 3075565 (1963-01-01), Weaver et al.
patent: 3081551 (1963-03-01), Kraus
patent: 3246399 (1966-04-01), Southern
patent: 3460261 (1969-08-01), Frey
patent: 3699660 (1972-10-01), Siegel
patent: 4274459 (1981-06-01), Galajda
Fischer Eric S.
Fischer Rory T.
Logan II Charles C.
Will Thomas B.
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