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|---|---|---|---|
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| D338280 | Krent et al. | Aug 1993 | |
| D341005 | Pratt | Nov 1993 | |
| D341679 | Levine | Nov 1993 | |
| D341681 | Levine | Nov 1993 | |
| D343480 | Levine | Jun 1994 | |
| D346245 | Krent et al. | Apr 1994 | |
| D347301 | Levine | May 1994 | |
| 1351731 | Baldwin | Sep 1920 | |
| 2550461 | Fick | Apr 1951 | |
| 3945047 | Jarrell, Jr. | Mar 1976 | |
| 4151614 | Rhee | May 1979 | |
| 4484361 | Leighton et al. | Nov 1984 | |
| 4490855 | Figgie, III et al. | Jan 1985 | |
| 4593416 | Figgie, III et al. | Jun 1986 | |
| 4599747 | Robinson | Jul 1986 | |
| 4599748 | Garcia | Jul 1986 | |
| 4685153 | Sims | Aug 1987 | |
| 4796303 | Atwater | Jan 1989 | |
| 4884561 | Letson, Sr. | Dec 1989 | |
| 4953569 | Lonerdo | Sep 1990 | |
| 4986263 | Dickerson et al. | Jan 1991 | |
| 5016621 | Bender | May 1991 | |
| 5024216 | Shiono | Jun 1991 | |
| 5255391 | Levine | Oct 1993 |