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Erwel Inc.
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Scarborough, Ontario, CA
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Patents Grants
last 30 patents
Information
Patent Grant
Bi-metallic steam trap
Patent number
4,427,149
Issue date
Jan 24, 1984
Erwel Inc.
Rai R. Adachi
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73376322 - ERWEL
Serial number
73376322
Registration number
1287698
Filing date
Jul 23, 1982
Erwel Inc.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73376331 - EE
Serial number
73376331
Registration number
1307724
Filing date
Jul 23, 1982
Erwel Inc.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments