Number | Name | Date | Kind |
---|---|---|---|
D93306 | Sutton et al. | Sep 1934 | |
D195540 | Knight | Jun 1963 | |
D251676 | Fouts | Apr 1979 | |
D254505 | Parsons et al. | Mar 1980 | |
D258078 | Gallagher et al. | Jan 1981 |
Entry |
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Philadelphia Valve Co., Fuel Oil and Oil Heat, Jan. 1963, p. 101, New Hose Swivel. |