Lawn sprinkler

Details Lawn sprinkler Lawn sprinkler

1977-10-25

1980-07-08

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2301

Patent

active

D02558254

REFERENCES:
patent: D162712 (1951-04-01), Calambini
patent: 2596383 (1952-05-01), Dunham
patent: 2691547 (1954-10-01), Campbell
patent: 3009650 (1961-11-01), Alvarez
patent: 3022012 (1962-02-01), Sharp et al.
patent: 3043522 (1962-07-01), Ryerson
patent: 3581994 (1971-06-01), Heiberger
patent: 3606136 (1971-09-01), Lewis
patent: 4163522 (1979-08-01), Hardy

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