United States Patent 3118234
US Patent References:
/1110026.html
- - 1110026

/1239336.html
- - 1239336

Leveling attachment for cameras
- - 1618237

Engine timing device
- - 2495765

Indicating device for ladders and the like
- - 2845719


Publication Date:
01/21/1964
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Primary Class:
33/354
Other Classes:
182/18, 182/129, 33/402, 33/371
International Classes:
E06C7/00