Self-locking collar and cooperating standard
United States Patent 3105682
US Patent References:
/0218404.html
- - 0218404

/1013829.html
- - 1013829

/1146843.html
- - 1146843

Adjustable support
- - 2398413

Mercury leveling clamp
- - 2452729


Inventors:
Ahrens, Donald W.
Publication Date:
10/01/1963
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Assignee:
Ahrens, Donald W.
Primary Class:
482/17
Other Classes:
473/575, 248/230.200, 248/295.110, 473/493, 403/374.500
International Classes:
A63B61/02; D06F53/04; A63B69/00; A63B61/00; D06F53/00
US Patent References:
2545784Alignment device support
Foreign References:
FR538288A