Volume reduction scale

Details Volume reduction scale Volume reduction scale

1977-01-21

1979-02-06

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D1004

Patent

active

D02509989

REFERENCES:
patent: D188806 (1960-09-01), Davis
patent: D193410 (1962-08-01), Reichenthal
patent: 696834 (1902-04-01), Mitchell
patent: 1574267 (1926-02-01), Warner
patent: 2507684 (1950-05-01), Smith
patent: 3863348 (1975-02-01), Herbst

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