- All sections
- A - Human necessities
- A62C - Fire-fighting
- A62C 4/02 - Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
Patent holdings for IPC class A62C 4/02
Total number of patents in this class: 92
10-year publication summary
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14
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10
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15
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4
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5
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6
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6
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6
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9
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0
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