Number | Name | Date | Kind |
---|---|---|---|
1037073 | Sonnemann | Aug 1912 | |
1566860 | Hainzigianis | Dec 1925 | |
2601364 | Byrnes | Jun 1952 | |
2704082 | Jackson | Mar 1955 | |
4718440 | Hawker et al. | Jan 1988 | |
4782843 | Lapaglia | Nov 1988 | |
4838949 | Dugrot | Jun 1989 |
Entry |
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Metreaud, C. G., "Article Cleaning Apparatus", IBM Technical Disclosure Bulletin, vol. 9, No. 12, May 1967, p. 1740. |