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Document Number
US Patent 3688439
Issued Date
BARRIER FOR PARKING SPACES
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Abstract
The invention pertains to a barrier which can be raised and lowered to permit only authorized parking within a given parking space. The barrier is pivotally mounted on a base plate which is fixed in the ground, and the barrier is in the form of a post having an internal locking member and a lift mechanism which is reinforced by the post against bending or other distortion. A lift handle is located transversely within the post and extends on either side for a sufficient distance so that conventional size automobiles cannot fit between adjacent barriers. A security device prevents lifting of the locking means except by operation of a key issued to the authorized user.
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Abstract - US Patent 3688439 Drawing
Drawing from US Patent 3688439
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Number of Claims:
4
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Owner
Published
BARRIER FOR PARKING SPACES
Application Number
05/146,902
Filed
May 26, 1971
US Classification
49/35   49/131 49/49 D25/126
Int'l Classification
E01F   13/00   (20060101)   E01F   13/08   (20060101)  
Examiner
Attorney/Law Firm
USPTO Field of Search
49/131   49/35   49/49   49/132   49/133   49/134   94/1.5   256/64   116/63P  
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