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2861511
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Information
Patent Grant
2861511
References
Source
Patent Number
2,861,511
Date Filed
Not available
Date Issued
Tuesday, November 25, 1958
66 years ago
CPC
B65D88/742 - using ventilating sheaths
E04H7/24 - Constructions, with or without perforated walls, depending on the use of specified materials
US Classifications
454 - Ventilation
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