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3073562
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Information
Patent Grant
3073562
References
Source
Patent Number
3,073,562
Date Filed
Not available
Date Issued
Tuesday, January 15, 1963
61 years ago
CPC
E21D15/44 - Hydraulic, pneumatic, or hydraulic-pneumatic props
B66F3/25 - Constructional features
E21D15/15 - Means counteracting entry of dirt Built-in cleaning devices
B66F2700/057 - Pistons
US Classifications
254 - Implements or apparatus for applying pushing or pulling force
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