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2444716
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Information
Patent Grant
2444716
References
Source
Patent Number
2,444,716
Date Filed
Not available
Date Issued
Tuesday, July 6, 1948
76 years ago
CPC
B65D90/10 - Manholes Inspection openings Covers therefor
B63B19/00 - Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
B63B2707/00 - Doors and closing means
Y10T292/0813 - Swinging and spring arm
Y10T292/0817 - Spring arm
US Classifications
292 - Closure fasteners
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