Title:
EXTENSIBLE RULER
United States Patent 3492737
US Patent References:
/0160471.html
- - 0160471
/1003626.html
- - 1003626
Leveling rod
- - 1957838
Extension plumb rod
- - 2245646
Extensible rule
- - 2356544
/0160471.html
- - 0160471
/1003626.html
- - 1003626
Leveling rod
- - 1957838
Extension plumb rod
- - 2245646
Extensible rule
- - 2356544
Inventors:
Swanson, Carl Josua
Publication Date:
02/03/1970
View Patent Images:
Export Citation:
Assignee:
Carl, Josua Swanson
Primary Class:
Other Classes:
33/666
International Classes:
G01B3/08; G01B3/02; G01B3/08
US Patent References:
| 2740201 | Extensible rule |
Foreign References:
| GB190905372A | ||||
| GB434166A |