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Pre-cast concrete unit for manholes
D246384 Pre-cast concrete unit for manholes
Patent Drawings:Drawing: D246384-2    
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(1 images)

Inventor: Brown, et al.
Date Issued: November 15, 1977
Application: 05/712,761
Filed: August 9, 1976
Inventors: Brown; Brian E. (Burlington, CA)
Hall; Alfred G. (London, CA)
Assignee: Moduloc Concrete Products (London) Ltd. (Concorde, CA)
Primary Examiner: Word; A. Hugo
Assistant Examiner:
Attorney Or Agent: Miller; Davidson C.
U.S. Class: D25/36
Field Of Search: 52/19; 52/20; 52/21; 406/25; D25/31; D25/80; D25/81; D25/87; D25/90; D25/91; D25/97; D25/98
International Class:
U.S Patent Documents: D30695; D30697; 315836; 2346361
Foreign Patent Documents: 1,364,447
Other References:

Claim: The ornamental design for a pre-cast concrete unit for manholes, as shown and described.
Description: FIG. 1 is a top perspective view of the design;

FIG. 2 is a bottom perspective view thereof.

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