of cooling fins

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a heat exchange tube with internal surface...
- Patent number 4,383,163
- Issue date May 10, 1983
- Gotaverken Anteknik AB
- Bertil H. Sjoholm
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Finned metal tube and method for making the same
- Patent number 4,300,630
- Issue date Nov 17, 1981
- Benito L. Trojani
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus for welding pins to a tube interior
- Patent number 4,241,287
- Issue date Dec 23, 1980
- Gotaverken Anteknik AB
- Bertil H. Sjoholm
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
3705972
- Patent number 3,705,972
- Issue date Dec 12, 1972
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
3014120
- Patent number 3,014,120
- Issue date Dec 19, 1961
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
2827551
- Patent number 2,827,551
- Issue date Mar 18, 1958
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
2684426
- Patent number 2,684,426
- Issue date Jul 20, 1954
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
1735213
- Patent number 1,735,213
- Issue date Nov 12, 1929
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR