Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-02-11
1983-12-13
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02717913
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patent: 1401176 (1921-12-01), Miller et al.
patent: 1727111 (1929-09-01), Moore
patent: 1801459 (1931-04-01), Slauter
patent: 3586244 (1971-06-01), Johnson
patent: 3603512 (1971-09-01), Ham
Hobby III William M.
Largen James R.
Senninger Irrigation Inc.
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