Number | Name | Date | Kind |
---|---|---|---|
1578137 | Kaplan | Mar 1926 | |
1807313 | Hines | May 1931 | |
2804960 | Yutang | Sep 1957 | |
2821953 | Langbart | Feb 1958 | |
2845162 | Picard | Jul 1958 | |
2877741 | Wilson | Mar 1959 | |
3084755 | Kaiser | Apr 1963 | |
3532206 | Bennett | Oct 1970 | |
3638776 | Ridge | Feb 1972 |
Entry |
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Borm, "Low Paper Sense," IBM Technical Disclosure Bulletin vol. 22, No. 8A, pp. 3283-3284, 1/80. |
DeBoo, "Low Paper Supply Alarm", Western Electric Technical Digest, No. 97, pp. 3-4. |