Circular slide rule
Description
FIG. 1 is a top, front, right perspective view of a circular slide rule, showing my new design;
FIG. 2 is a front elevation thereof;
FIG. 3 is a right side elevation thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof; and
FIG. 6 is a rear elevation thereof.
The left side elevation is a mirror image of the right side.
The circular dial shown in the center of the circular slide rule in FIGS. 1 and 2 is rotatable, and will appear in various rotational positions.
Referenced Cited
Patent History
Patent number: D277108
Type: Grant
Filed: Sep 30, 1982
Date of Patent: Jan 8, 1985
Inventor: Lynn Lundquist (Portland, OR)
Primary Examiner: Louis S. Zarfas
Attorney: Glen A. Collett
Application Number: 6/431,742
Type: Grant
Filed: Sep 30, 1982
Date of Patent: Jan 8, 1985
Inventor: Lynn Lundquist (Portland, OR)
Primary Examiner: Louis S. Zarfas
Attorney: Glen A. Collett
Application Number: 6/431,742
Classifications