Manhole shield retainer

Details Manhole shield retainer Manhole shield retainer

2001-02-09

2001-12-18

Clark, Doris (Department: 2914)

Building units and construction elements

Prefabricated unit

Framing unit, e.g., building frame

Design Patent

active

D0452330

CLAIM:
The ornamental design for a manhole shield retainer, as shown and described.

REFERENCES:
patent: D. 30268 (1899-02-01), Wittbold
patent: 2113118 (1938-04-01), Pyatt
patent: 5890507 (1999-04-01), Hinsperger

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