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| All Patents in class 222/391 | |||||
| Number | Date | Patentee | Title | Type | |
| 1,466,256 | Aug. 28, 1923 | E.B. Stelter | Force Pump Oil Can | oil cans | |
| 1,515,446 | Nov. 11, 1924 | E.B. Stelter | Force Pump Oil Can | oil cans | |
| 5,248,068 | Sep. 28, 1993 | S.R. Wente, N.C. Rittmann Gasperi, R.S. Goergen | Caulk Gun with Ergonomic Handles | ||