Number | Date | Country | Kind |
---|---|---|---|
3014822 | Apr 1980 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1399993 | Pfannenstiehl | Dec 1921 | |
1762749 | Tauschek | Jun 1930 | |
2456734 | Ritzert | Dec 1948 | |
3120177 | Clark | Feb 1964 | |
3387081 | Kleinschmidt et al. | Jun 1968 | |
3707214 | Ponzano | Dec 1972 | |
3840107 | Mack et al. | Oct 1974 | |
3986594 | Kondur | Oct 1976 | |
4044883 | Boehmer | Aug 1977 | |
4062436 | Kondur et al. | Dec 1977 | |
4265551 | Adamek et al. | May 1981 |
Number | Date | Country |
---|---|---|
55-142683 | Nov 1980 | JPX |
55-142684 | Nov 1980 | JPX |
7608038 | Feb 1977 | NLX |
Entry |
---|
IBM Tech. Disc. Bulletin, "Ribbon Drive", by R. G. Cross, vol. 15, No. 7, Dec. 1972, p. 2312. |