Number | Date | Country | Kind |
---|---|---|---|
56-49313 | Apr 1981 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4203132 | Schmitt et al. | May 1980 | |
4342090 | Caccoma et al. | Jul 1982 |
Entry |
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R. F. Duffy et al., "Automatic CCTV Positioning System", IBM Technical Disclosure Bulletin, vol. 14, No. 8, Jan. 1972. |