Patents
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E04 - Building
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E04H - Buildings or like structures for particular purposes; Swimming or splash baths or pools; Masts; Fencing; Tents or canopies, in general
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E04H 12 - Towers; Masts, poles; Chimney stacks; Water-towers; Methods of erecting such structures
Patents for E04H 12 - Towers; Masts, poles; Chimney stacks; Water-towers; Methods of erecting such structures (12,702)
02/1976
02/03/1976
US3935689
Transmission line structure
01/1976
01/27/1976
US3934381
Stop lock assembly for a pivotal tower
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