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2892647
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Information
Patent Grant
2892647
References
Source
Patent Number
2,892,647
Date Filed
Not available
Date Issued
Tuesday, June 30, 1959
65 years ago
CPC
E04H12/34 - Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
E21D15/40 - Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted
F16B7/105 - locking in discrete positions
Y10T403/32434 - Unidirectional movement, e.g., ratchet, etc.
US Classifications
248 - Supports
403 - Joints and connections
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