United States Patent 2732102
US Patent References:
/0367698.html
- - 0367698

Grease gun and cartridge therefor
- - 1489262

Calking gun and operating mechanism therefor
- - 2367346


Publication Date:
01/24/1956
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Primary Class:
222/327
Other Classes:
222/391, 222/473
International Classes:
G01F11/02