Lighted torpedo level

Details Lighted torpedo level Lighted torpedo level

1991-12-18

1993-01-05

Douglas, Alan P.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Patent

active

D03322262

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patent: 4829676 (1989-05-01), Waldron
patent: 4876798 (1989-10-01), Zimmerman
patent: 5103569 (1992-04-01), Heatherwood
Stanley Tools Full Line Catalog, 1989, Layout Tools, p. 91.

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