Valve lock

Details Valve lock Valve lock

1992-08-24

1995-05-16

Word, A. Hugo

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Valve or body therefor

Patent

active

D03584550

REFERENCES:
patent: 1099280 (1914-06-01), Connolly
patent: 2693815 (1949-08-01), Gould
patent: 3006181 (1958-05-01), Sarti
patent: 3532111 (1970-10-01), Hansen
patent: 4681134 (1987-07-01), Paris, Sr.
patent: 4971289 (1990-11-01), Pistras
Burley and Guirguis, Nasa Tech Briefs, Dec., 1991, p. 63.
Brady Ball Valve Lockout "I," #65666, not dated.
Brady Ball Valve Lockout "II," #65666, not dated.
B-Safe Ball Valve Lockout #HB501, HB502, not dated.

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