Roof drain

Details Roof drain Roof drain

1987-07-24

1991-07-09

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Fitting

Patent

active

D03181014

REFERENCES:
patent: D222354 (1971-10-01), Foltz
patent: D259950 (1981-07-01), Henry
patent: 1127246 (1915-02-01), Hirshstein
patent: 1448769 (1923-03-01), Sanders
patent: 1544761 (1925-07-01), Kiefer
patent: 1710304 (1929-04-01), Flynn et al.
patent: 2985465 (1961-05-01), Church
patent: 3095219 (1963-06-01), Tutty
patent: 3481632 (1969-12-01), Shess
patent: 4122230 (1978-10-01), Lowell
patent: 4230346 (1980-10-01), Gobel
patent: 4505499 (1985-03-01), Uglow et al.

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