Number | Date | Country | Kind |
---|---|---|---|
63-114671 | May 1988 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3887998 | Hartleroad et al. | Jun 1975 | |
4780956 | Pearson et al. | Nov 1988 |
Number | Date | Country |
---|---|---|
177833 | Sep 1985 | JPX |
Entry |
---|
Dunman, J. P. G., Vacuum Operated Pickup Probe, IBM Tech. Discl. Bull., vol. 12, No. 8, Jan. 1970. |