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R.W. FERNSTRUM & COMPANY
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WASHINGTON, DC, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for enhancing the heat transfer efficiency of...
Patent number
7,055,576
Issue date
Jun 6, 2006
R. W. Fernstrum & Co.
Todd S. Fernstrum
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Outboard marine heat exchanger
Patent number
6,099,373
Issue date
Aug 8, 2000
R.W. Fernstrum & Company
Todd S. Fernstrum
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Marine heat exchanger
Patent number
5,931,217
Issue date
Aug 3, 1999
R.W. Fernstrum & Company
Paul W. Fernstrum
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Underwater outboard marine heat exchanger
Patent number
4,338,993
Issue date
Jul 13, 1982
R. W. Fernstrum & Co.
Paul W. Fernstrum
F28 - HEAT EXCHANGE IN GENERAL
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
87258479 - GRIDCOOLER KEEL COOLER
Serial number
87258479
Registration number
5244853
Filing date
Dec 6, 2016
R. W. FERNSTRUM & COMPANY
7 - Machines and machine tools
Information
Trademark
86111346 - FERNSTRUM
Serial number
86111346
Registration number
4574973
Filing date
Nov 6, 2013
R. W. FERNSTRUM & COMPANY
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
78383525 - FERNSTRUM
Serial number
78383525
Registration number
2933274
Filing date
Mar 12, 2004
R. W. FERNSTRUM & COMPANY
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
75715815
Serial number
75715815
Registration number
2357354
Filing date
May 28, 1999
R. W. FERNSTRUM & COMPANY
7 - Machines and machine tools
Information
Trademark
75701707
Serial number
75701707
Filing date
May 10, 1999
R. W. FERNSTRUM & COMPANY
40 - Treatment of materials
Information
Trademark
75382250
Serial number
75382250
Filing date
Oct 30, 1997
R. W. FERNSTRUM & COMPANY
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
75269842 - SMARTCOOLER
Serial number
75269842
Registration number
2300358
Filing date
Apr 7, 1997
R. W. FERNSTRUM & COMPANY
12 - Vehicles
Information
Trademark
74275710 - FERNCOOL
Serial number
74275710
Registration number
1762443
Filing date
May 15, 1992
R. W. FERNSTRUM & COMPANY
7 - Machines and machine tools
Information
Trademark
72343833 - GRIDCOOLER
Serial number
72343833
Registration number
941382
Filing date
Nov 18, 1969
R. W. FERNSTRUM & COMPANY
7 - Machines and machine tools