Counterbalanced supporting arm
United States Patent 2700524
US Patent References:
/0316459.html
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/0560338.html
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/0803980.html
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/0823372.html
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/0834104.html
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/0316459.html
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/0560338.html
- - 0560338
/0803980.html
- - 0803980
/0823372.html
- - 0823372
/0834104.html
- - 0834104
Inventors:
Lauterbach, Norman E.
Publication Date:
01/25/1955
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Assignee:
RITTER CO INC
Primary Class:
Other Classes:
267/173
International Classes:
A61B6/00; F16M11/04; F21V21/26; F16M11/02; F21V21/14
US Patent References: