Spacing projections formed by folded sheet portions

This industry / category may be too specific. Please go to a parent level for more data

Industries

Please log in for detailed analytics

Patents Grantslast 30 patents

Information Patent Grant
1735942
- Patent number 1,735,942
- Issue date Nov 19, 1929
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1683340
- Patent number 1,683,340
- Issue date Sep 4, 1928
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1682327
- Patent number 1,682,327
- Issue date Aug 28, 1928
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1657463
- Patent number 1,657,463
- Issue date Jan 31, 1928
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1481291
- Patent number 1,481,291
- Issue date Jan 22, 1924
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1410531
- Patent number 1,410,531
- Issue date Mar 21, 1922
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1404160
- Patent number 1,404,160
- Issue date Jan 17, 1922
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1321052
- Patent number 1,321,052
- Issue date Nov 4, 1919
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1189540
- Patent number 1,189,540
- Issue date Jul 4, 1916
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1139961
- Patent number 1,139,961
- Issue date May 18, 1915
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1086061
- Patent number 1,086,061
- Issue date Feb 3, 1914
- F28 - HEAT EXCHANGE IN GENERAL