Number | Name | Date | Kind |
---|---|---|---|
2300288 | Hullhorst | Oct 1942 | |
2337951 | Whitehead | Jan 1943 | |
3866463 | Smith et al. | Feb 1975 | |
4674340 | Burr et al. | Jun 1987 | |
4696144 | Bankutu | Sep 1987 | |
4716772 | Bubeck et al. | Jan 1988 |
Entry |
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Photos 1A and 1B--Described at specification pages 2-4. |
Photos 2A, 2B and 2C--Manufactured by Automated Dynamics Corporation, Denver, Colorado. |