Sprinkler

Details Sprinkler Sprinkler

1976-04-07

1977-09-27

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2301

Patent

active

D02459159

REFERENCES:
patent: 1605325 (1926-11-01), Borgeson
patent: 1615010 (1927-01-01), Gerding
patent: 1631381 (1927-06-01), Nelson
patent: 1825640 (1931-09-01), Wert
patent: 1938000 (1933-12-01), Wahlin
patent: 2161016 (1939-06-01), Carr
patent: 2247897 (1941-07-01), Wahlin
patent: 3550859 (1970-12-01), Pettit
patent: D22491 (1893-05-01), Melavin
patent: D23700 (1894-10-01), Wilgus
patent: D32155 (1900-01-01), Todd

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