Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Fitting
Patent
1986-11-12
1991-02-19
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Fluid handling or treatment equipment
Fitting
Patent
active
D03148149
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patent: D33086 (1900-08-01), Levering
patent: D121608 (1940-07-01), Bedur
patent: D184984 (1959-04-01), Chapman
patent: D221432 (1971-08-01), Dunlap
patent: D239018 (1976-03-01), Knox
patent: 1540504 (1925-06-01), Seaman
patent: 2517669 (1950-08-01), Hufferd et al.
Largen James R.
Root Lowell Manufacturing Co.
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