-
3921709
-
Patent number 3,921,709
-
Issue date Nov 25, 1975
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F28 - HEAT EXCHANGE IN GENERAL
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3613777
-
Patent number 3,613,777
-
Issue date Oct 19, 1971
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F28 - HEAT EXCHANGE IN GENERAL
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3612168
-
Patent number 3,612,168
-
Issue date Oct 12, 1971
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F28 - HEAT EXCHANGE IN GENERAL
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3612169
-
Patent number 3,612,169
-
Issue date Oct 12, 1971
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
-
3500901
-
Patent number 3,500,901
-
Issue date Mar 17, 1970
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3473603
-
Patent number 3,473,603
-
Issue date Oct 21, 1969
-
F24 - HEATING RANGES VENTILATING
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3426838
-
Patent number 3,426,838
-
Issue date Feb 11, 1969
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F28 - HEAT EXCHANGE IN GENERAL
-
3424234
-
Patent number 3,424,234
-
Issue date Jan 28, 1969
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F28 - HEAT EXCHANGE IN GENERAL
-
3391733
-
Patent number 3,391,733
-
Issue date Jul 9, 1968
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F28 - HEAT EXCHANGE IN GENERAL
-
3363676
-
Patent number 3,363,676
-
Issue date Jan 16, 1968
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F28 - HEAT EXCHANGE IN GENERAL
-
3151669
-
Patent number 3,151,669
-
Issue date Oct 6, 1964
-
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
-
2902263
-
Patent number 2,902,263
-
Issue date Sep 1, 1959
-
F28 - HEAT EXCHANGE IN GENERAL
-
2660408
-
Patent number 2,660,408
-
Issue date Nov 24, 1953
-
F28 - HEAT EXCHANGE IN GENERAL
-
2551748
-
Patent number 2,551,748
-
Issue date May 8, 1951
-
F28 - HEAT EXCHANGE IN GENERAL
-
1945333
-
Patent number 1,945,333
-
Issue date Jan 30, 1934
-
A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
-
1694452
-
Patent number 1,694,452
-
Issue date Dec 11, 1928
-
A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
-
1578205
-
Patent number 1,578,205
-
Issue date Mar 23, 1926
-
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
-
1511421
-
Patent number 1,511,421
-
Issue date Oct 14, 1924
-
A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
-
1454315
-
Patent number 1,454,315
-
Issue date May 8, 1923
-
F28 - HEAT EXCHANGE IN GENERAL
-
1417037
-
Patent number 1,417,037
-
Issue date May 23, 1922
-
F28 - HEAT EXCHANGE IN GENERAL
-
1224981
-
Patent number 1,224,981
-
Issue date May 8, 1917
-
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
-
1080454
-
Patent number 1,080,454
-
Issue date Dec 2, 1913
-
F28 - HEAT EXCHANGE IN GENERAL
-
1080455
-
Patent number 1,080,455
-
Issue date Dec 2, 1913
-
F28 - HEAT EXCHANGE IN GENERAL
-
943294
-
Patent number 943,294
-
Issue date Dec 14, 1909
-
F28 - HEAT EXCHANGE IN GENERAL
-
916532
-
Patent number 916,532
-
Issue date Mar 30, 1909
-
F28 - HEAT EXCHANGE IN GENERAL
-
882706
-
Patent number 882,706
-
Issue date Mar 24, 1908
-
F28 - HEAT EXCHANGE IN GENERAL
-
874598
-
Patent number 874,598
-
Issue date Dec 24, 1907
-
F28 - HEAT EXCHANGE IN GENERAL
-
869978
-
Patent number 869,978
-
Issue date Nov 5, 1907
-
F28 - HEAT EXCHANGE IN GENERAL
-
676070
-
Patent number 676,070
-
Issue date Jun 11, 1901
-
F28 - HEAT EXCHANGE IN GENERAL
-
674353
-
Patent number 674,353
-
Issue date May 14, 1901
-
F28 - HEAT EXCHANGE IN GENERAL