Number | Name | Date | Kind |
---|---|---|---|
1491675 | Conklin | Apr 1924 | |
1568880 | Conklin | Jan 1926 | |
2166439 | Johnson | Jul 1939 | |
2824685 | Patton | Feb 1958 | |
3655121 | Ward | Apr 1972 | |
3937492 | Biron | Feb 1976 | |
3986662 | Luftig | Oct 1976 | |
4368903 | Jones | Jan 1983 | |
4429827 | Murray | Feb 1984 | |
4682793 | Walz | Jul 1987 | |
5104036 | Rutkowski et al. | Apr 1992 | |
5183203 | Sanders | Feb 1993 | |
5190210 | Walz | Mar 1993 | |
5213258 | Kim | May 1993 | |
5271553 | Kim | Dec 1993 | |
5316208 | Petkovsek | May 1994 | |
5346124 | Chess | Sep 1994 | |
5501393 | Walz | Mar 1996 | |
5507526 | Petkovsek | Apr 1996 | |
5752647 | Schubert et al. | May 1998 |
Entry |
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"Commercial Ferrarelli, Inc. Return Receipt envelope, photocopy, admitted prior art," No Date. |