This application is a continuation-in-part of U.S. patent application Ser. No. 396,426, filed Sept. 12, 1973, now abandoned, the entire contents of which are incorporated herein by reference.
Number | Name | Date | Kind |
---|---|---|---|
2534235 | Cusic | Dec 1950 | |
2942000 | Mizier | Jun 1960 | |
3098854 | Klosa | Jul 1963 | |
3190920 | Spickett et al. | Jun 1965 |
Number | Date | Country | |
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Parent | 396426 | Sep 1973 |