Constant sine bar

Details Constant sine bar Constant sine bar

1982-09-20

1984-11-13

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D 8 14

Patent

active

D02763176

REFERENCES:
patent: D137417 (1944-03-01), Baker
patent: 2417150 (1947-03-01), Berry
patent: 2446562 (1948-08-01), Trbojevich
patent: 3623231 (1971-11-01), Holt
American Machinist-2/1/33-pp. 90-91-Sine Bars.
American Machinist-6/6/46-p. 143-Sine Bars.

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