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Positive pressure valves
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Patent number 4,210,174
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Issue date Jul 1, 1980
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Instrumentation Industries, Inc.
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Bela Eross
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Slip-proof coupling device
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Patent number 4,045,058
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Issue date Aug 30, 1977
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Instrumentation Industries, Inc.
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Bela Eross
-
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
-
-
Slip-proof coupling device
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Patent number 3,953,060
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Issue date Apr 27, 1976
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Instrumentation Industries, Inc.
-
Bela Eross
-
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE