Growth chart

Details Growth chart Growth chart

1983-06-27

1985-06-25

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D10 70

Patent

active

D02793580

REFERENCES:
patent: 865709 (1907-09-01), Johnson
patent: 1608771 (1926-11-01), Cary
patent: 1974085 (1934-09-01), Shields
patent: 2324334 (1943-07-01), Sutton
patent: 2410696 (1946-11-01), Wheeler
patent: 3195548 (1965-07-01), Moore
patent: 4118868 (1978-10-01), Johnson

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