Number | Date | Country | Kind |
---|---|---|---|
61-6691 | Jan 1986 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3294902 | Maxey | Dec 1966 | |
4040109 | Kryltsov | Aug 1977 | |
4285016 | Gilovich | Aug 1981 | |
4318146 | Ike etal. | Mar 1982 | |
4321634 | Lehureau | Mar 1982 | |
4369473 | Eibensteiner | Jan 1983 | |
4482928 | Moriya et al. | Nov 1984 | |
4609947 | Yamagiwa et al. | Sep 1986 |
Number | Date | Country |
---|---|---|
52-26807 | Feb 1977 | JPX |
Entry |
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Pugh, "New Format Video Recorder", IBM Tech. Disc. Bull., vol. 22, No. 4, Sep. 1979. |
Zentgraf, "Dual-Sized Magnetic Recording", IBM Tech. Disc. Bull., vol. 15, No. 11, Apr. 1973. |