Measuring device
United States Patent 3168023
US Patent References:
/0689361.html
- - 0689361
/0752617.html
- - 0752617
Deep well camera
- - 2632801
Camera for photographing the inner surface of a hollow body
- - 2894436
/2899856.html
- - 2899856
/0689361.html
- - 0689361
/0752617.html
- - 0752617
Deep well camera
- - 2632801
Camera for photographing the inner surface of a hollow body
- - 2894436
/2899856.html
- - 2899856
Inventors:
Harmon, Donald E.
Publication Date:
02/02/1965
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Export Citation:
Assignee:
Harmon, Donald E.
Primary Class:
Other Classes:
33/281, 396/200
International Classes:
B61K9/02; B61K9/00
US Patent References:
| 2932243 | Mobile camera for lateral underground subway surveying and recording |
Foreign References:
| BE512386A | ||||
| FR1039549A |