Resilient supporting shank
United States Patent 2976000
US Patent References:
Goal-line staff
- - 1741452

Flexible post
- - 1939968

Traffic signal
- - 2050579


Inventors:
Gunderson, Ralph R.
Publication Date:
03/21/1961
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Assignee:
Gunderson, Ralph R.
Primary Class:
248/156
Other Classes:
D20/41, 404/10, 248/469, 116/173, 248/160, 248/623, 248/466, 248/480, 40/608
International Classes:
E01F9/017; E01F9/011