Sight glass for sprinkler system lines

Details Sight glass for sprinkler system lines Sight glass for sprinkler system lines

1998-04-16

1999-08-03

Davis, Antoine Duval

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Element or attachment

D10 96, 1004

Patent

active

D04124545

REFERENCES:
patent: D256000 (1980-07-01), Molijn
patent: D315526 (1991-03-01), Esau
patent: 4788929 (1988-12-01), Krause et al.
Photocopy of catalog sheet of Grainger; p. 3096; date unknown but believed to be prior art.
Photocopy of catalog sheets of McMaster-Carr; pp. 1238-1239; date unknown but believed to be prior art.
Photocopy of drawing of United Brass Works, Inc. illustrating part No. 850020; dated Oct. 25, 1996.

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