Patent Grant
D427504
| Number | Name | Date | Kind |
|---|---|---|---|
| D269064 | Ericsson | May 1983 | |
| 1653083 | Blaw | Dec 1927 | |
| 1907889 | Stauffer | May 1933 | |
| 2383881 | Murphy | Aug 1945 | |
| 2651094 | Dodge | Sep 1953 | |
| 2703216 | Petersen | Mar 1955 | |
| 2706023 | Merritt | Apr 1955 | |
| 2780205 | Banck | Feb 1957 | |
| 2977995 | Walpole | Apr 1961 | |
| 3241800 | Richter, III | Mar 1966 | |
| 3374978 | Salmon et al. | Mar 1968 | |
| 3462110 | Cheslock | Aug 1969 | |
| 3734438 | Kautz | May 1973 | |
| 3750992 | Johnson | Aug 1973 | |
| 3894707 | Heard | Jul 1975 | |
| 4066233 | Heard | Jan 1978 | |
| 4125240 | Heard | Nov 1978 | |
| 4211381 | Heard | Jul 1980 | |
| 4325259 | Willertz | Apr 1982 | |
| 4635888 | Aldridge et al. | Jan 1987 | |
| 4759521 | Aldridge et al. | Jul 1988 | |
| 4899963 | Murphy | Feb 1990 | |
| 5098051 | Aldridge et al. | Mar 1992 |
