Title:
Self-leveling device
United States Patent 2681783
US Patent References:
/1168727.html
- - 1168727
/1260181.html
- - 1260181
Aero-inclinometer
- - 1365233
Radio direction finder
- - 1569325
Gravity table
- - 1623427
/1168727.html
- - 1168727
/1260181.html
- - 1260181
Aero-inclinometer
- - 1365233
Radio direction finder
- - 1569325
Gravity table
- - 1623427
Inventors:
Smith, William J.
Publication Date:
06/22/1954
View Patent Images:
Export Citation:
Assignee:
Smith, William J.
Primary Class:
Other Classes:
403/125, 33/397, 33/402
International Classes:
B63B29/12; B63B29/00
Foreign References:
| GB189111227A | ||||
| FR387530A |