Spirit level

Details Spirit level Spirit level

2007-10-23

2007-10-23

Davis, Antoine D. (Department: 2915)

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Design Patent

active

29248667

CLAIM:
The ornamental design for a spirit level, as shown.

REFERENCES:
patent: D34017 (1901-01-01), Farwell
patent: 1101319 (1914-06-01), Neff
patent: D139402 (1944-11-01), Chaney
patent: 3383772 (1968-05-01), Gardner et al.
patent: 5403001 (1995-04-01), Skorpinski
patent: D368666 (1996-04-01), Fonte
patent: D407335 (1999-03-01), Bowen

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