Number | Name | Date | Kind |
---|---|---|---|
1423221 | Jeffers | Jul 1922 | |
1544407 | Jeffers | Jun 1925 | |
2225397 | Franks | Dec 1940 | |
2393412 | Riddell | Jan 1946 | |
2488626 | Hansen | Nov 1949 | |
2542476 | Carlson | Feb 1951 | |
2544813 | Wall | Mar 1951 | |
2712412 | West | Jul 1955 | |
3399771 | Hryniowski | Sep 1968 | |
3658211 | Kitchens | Apr 1972 | |
3724908 | Burrough et al. | Apr 1973 | |
3995668 | Goodman | Dec 1976 | |
4024985 | Iinoya et al. | May 1977 | |
4128191 | Frase et al. | Dec 1978 | |
4767322 | Beckenbach et al. | Aug 1988 | |
4793744 | Montag | Dec 1988 | |
4913597 | Christianson et al. | Apr 1990 | |
4970830 | Schlick | Nov 1990 | |
5356280 | Ponzielli | Oct 1994 |
Entry |
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"Kongskilde" advertisement published at least befor Apr. 7, 1998, 1 Page. |
Crary "Hi-Pressure Fans" advertisement published before Jun. 15, 1998, 1 Page. |