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2939416
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Information
Patent Grant
2939416
References
Source
Patent Number
2,939,416
Date Filed
Not available
Date Issued
Tuesday, June 7, 1960
64 years ago
CPC
B63C7/22 - using electromagnets or suction devices
B63B2221/08 - by means of threaded members
US Classifications
114 - Ships
405 - Hydraulic and earth engineering
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