| All Patents in class 335/295 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 1,125,198 | Jan. 19, 1915 | H.K. Spencer | Magnetic Chuck | magnetic chucks |
| 1,568,024 | Dec. 29, 1925 | H.K. Spencer | Magnetic Holding Device | magnetic chucks |
| 2,053,177 | Sep. 01, 1936 | W.L. Bower | Work holder | magnetic chucks |
| 2,160,405 | May 30, 1939 | F.R. Mallalieu | Work holder | magnetic chucks |
| 2,209,558 | Jul. 30, 1940 | O. Block, J. Bing | Magnetic clamping appliance | surface gauges |
| 2,217,048 | Oct. 08, 1940 | C.W. Floss | Magnetic work holder | magnetic chucks |
| 2,271,904 | Feb. 03, 1942 | E.L. Watelet | Magnetic Work Holder | magnetic chucks |
| 2,280,437 | Apr. 21, 1942 | G.N. Levesque | Releasable Permanent Magnet Holding Device | |
| 2,609,430 | Sep. 02, 1952 | W.L. Bower | Magnetic Work Holder | chucks |
| 2,888,617 | May 26, 1959 | G.A. Baumet | Magnetic Tool Holder | test indicator holders |
| 2,947,921 | Aug. 02, 1960 | E.L. Watelet | Fine Grid Permanent Magnetic Chuck | |
| 3,142,006 | Jul. 21, 1964 | C. Stead | Permanent Magnetic Chuck | magnetic chucks |
| 3,142,787 | Jul. 28, 1964 | G.N. Levesque | Permanent Magnetic Block | |
| 3,336,551 | Aug. 15, 1967 | C. Stead | Magnetic Chucks | magnetic chucks |
| 4,575,702 | Mar. 11, 1986 | T. Nitta, H. Iwasaki | Permanent magnetic chuck | magnetic chucks |
