Air leak indicator

Details Air leak indicator Air leak indicator

2000-10-27

2002-09-10

Davis, Antoine Duval (Department: 2913)

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Design Patent

active

D0462625

CLAIM:
The ornamental design for an “air leak indicator”, as shown and described.

REFERENCES:
patent: 726761 (1903-04-01), Rivers
patent: 801660 (1905-10-01), Goeb
patent: 2927709 (1960-03-01), Hoffman et al.
patent: 3023607 (1962-03-01), Bolch, Jr. et al.
patent: 3742898 (1973-07-01), Souza
patent: 3780693 (1973-12-01), Parr
patent: 4170247 (1979-10-01), Bates
patent: 4203385 (1980-05-01), Mayer et al.
patent: 4899684 (1990-02-01), Houzvic et al.
patent: 5311911 (1994-05-01), Krausser et al.
Indiplug Brochure, circa 1994.

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