The invention described herein may be manufactured, used, and licensed by or for the Government for governmental purposes without the payment to us of any royalty thereon.
Number | Name | Date | Kind |
---|---|---|---|
4291244 | Beach et al. | Sep 1981 | |
4394426 | Shimizu et al. | Jul 1983 | |
4452827 | Koler et al. | Jun 1984 | |
4554208 | MacIver et al. | Nov 1985 | |
4618505 | MacIver et al. | Oct 1986 | |
4743493 | Sioshansi et al. | May 1988 | |
4820580 | Hocker et al. | Apr 1989 |