Number | Name | Date | Kind |
---|---|---|---|
1328988 | Eckert et al. | Jan 1920 | |
3042796 | De Forest | Jul 1962 | |
3830270 | Hagert et al. | Aug 1974 | |
3935607 | Cantwell et al. | Feb 1976 | |
4144607 | Soubie | Mar 1979 | |
4155453 | Ono | May 1979 | |
4398074 | Danielson et al. | Aug 1983 | |
4766837 | Parish | Aug 1988 | |
5234144 | Iler | Aug 1993 |
Entry |
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Flyer for Seasafe #4055 by Basic Designs, Inc. -offered for sale Aug. 1991. |