Title:
Elevation markers
United States Patent 3319391


Inventors:
Anthony, Lutch
Application Number:
US40409664A
Publication Date:
05/16/1967
Filing Date:
10/15/1964
Assignee:
Anthony, Lutch
Primary Class:
Other Classes:
52/295, 52/365, 248/230.8
International Classes:
E04G21/18
View Patent Images:
US Patent References:
3145961Branch attaching device1964-08-25
2523785Resilient clamping device for framework elements1950-09-26
1658535Derrick1928-02-07
1527323Metal derrick and the like1925-02-24
0452886N/A1891-05-26