Number | Name | Date | Kind |
---|---|---|---|
2420119 | Boehm et al. | May 1947 | |
3115678 | Keen et al. | Dec 1963 | |
3466919 | Bledstein | Sep 1969 | |
3668033 | Evans | Jun 1972 | |
3816044 | Nielsen et al. | Feb 1973 |
Entry |
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Taber Instrument Corporation, Taber Thermofold, Aug. 4, 1950. |