Geometrical instruments – Straightedge type – Rules
Patent
1993-07-19
1994-08-09
Will, Thomas B.
Geometrical instruments
Straightedge type
Rules
33759, 336791, G01B 302
Patent
active
053354214
ABSTRACT:
Rules, including rulers, yardsticks, measuring tapes and the like which are marked along opposite edges with inch, half-inch, quarter-inch, eighth-inch and sixteenth-inch graduations. One edge having the one-sixteenth inch graduations in a color different from all the other graduation markings on that edge and sequentially numbered within each inch in the same different color. The other edge not having one-sixteenth inch graduations and the eighth-inch graduations being in a different color from all the other graduations on that side and preferably different from the color of the one-sixteenth inch graduations and sequentially numbered within each inch in the same different color.
REFERENCES:
patent: 1469944 (1923-10-01), Merrill
patent: 1602490 (1926-10-01), Homan
patent: 1687429 (1928-10-01), Datson
patent: 1776245 (1930-09-01), Barrett
patent: 1816548 (1931-07-01), Robidoux
patent: 2077828 (1937-04-01), Dombrowski
patent: 2561020 (1951-07-01), Gerber
patent: 4547969 (1985-10-01), Haack
patent: 4750270 (1988-06-01), Kundikoff
patent: 4811489 (1989-03-01), Walker
patent: 4951397 (1990-08-01), Durio
LandOfFree
Rules does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rules, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rules will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-207967