Number | Name | Date | Kind |
---|---|---|---|
490922 | Pelzer | Jan 1893 | |
1604328 | Walker | Oct 1926 | |
1725344 | Dennis | Aug 1929 | |
1787652 | Anderson | Jan 1931 | |
2814431 | Darrow et al. | Nov 1957 | |
4135850 | d'Anjou | Jan 1979 | |
5161941 | Ratner | Nov 1992 |
Number | Date | Country |
---|---|---|
41436 | Mar 1937 | NLX |
Entry |
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"Varimark II" brochure re air volume control device for centrifugal fans (three pages) (undated). |
"Econo-Sleeve" No. 83-46253-05, by Pace Co. (two drawings) (Sep. 15, 1994). |