Lawn sprinkler head protector

Details Lawn sprinkler head protector Lawn sprinkler head protector

1991-07-18

1993-02-23

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Dispersal

Patent

active

D03335070

REFERENCES:
patent: D256386 (1980-08-01), Bergland
patent: 3009651 (1961-11-01), Wolf
patent: 3015448 (1962-01-01), Hurless
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patent: 3265310 (1966-08-01), Cohen
patent: 3662956 (1972-05-01), Hedman
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patent: 3904120 (1975-09-01), Sbicca
patent: 4146181 (1979-03-01), Soos
patent: 4212426 (1980-07-01), Choi
patent: 4350296 (1982-09-01), Kuhlman et al.
patent: 4429832 (1984-02-01), Sheets
patent: 4582256 (1986-04-01), Jaquez
patent: 4781327 (1988-11-01), Lawson et al.

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