FLOORING SYSTEMS
United States Patent 3473281

Inventors:
Omholt, Ray E.
Publication Date:
10/21/1969
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Assignee:
POWERLOCK FLOORS INC
Primary Class:
52/480
Other Classes:
52/364
International Classes:
E04F15/02; E04F15/18; E04B5/02; E04F15/22
US Patent References:
1777358Sleeper mounting
1781117Floor sleeper
2302181Wood flooring
Foreign References:
CA579973A




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