Number | Name | Date | Kind |
---|---|---|---|
1805712 | Bradley et al. | May 1931 | |
3083193 | Kolner et al. | Mar 1963 | |
3634381 | Lehnerer | Jan 1972 | |
3683511 | Johnson et al. | Aug 1972 |
Number | Date | Country |
---|---|---|
1016295 | Aug 1952 | FRX |
1266746 | Jun 1961 | FRX |
Entry |
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European Search Report for EP 92311503 and communication dated Dec. 5, 1993. |