Carpenter's transit
United States Patent 2497933
US Patent References:
/0784511.html
- - 0784511

/0799878.html
- - 0799878

/0814292.html
- - 0814292


Inventors:
Devers, Charles E.
Publication Date:
02/21/1950
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Assignee:
Devers, Charles E.
Primary Class:
33/281
International Classes:
G01C5/00
Foreign References:
CH36320A
DE248438C
DE317467C