Number | Name | Date | Kind |
---|---|---|---|
2410447 | Juran | Nov 1946 | |
2862328 | Wadsworth | Dec 1958 | |
3484952 | Coldren | Dec 1969 | |
4139965 | Currey et al. | Feb 1979 | |
4265624 | Krulwich | May 1981 | |
4379364 | Fish | Apr 1983 | |
4439159 | Hunter | Mar 1984 | |
4457717 | Chika | Jul 1984 | |
4498238 | Vaughn | Feb 1985 | |
4799680 | Weimar | Jan 1989 | |
4976647 | Axtell | Dec 1990 | |
5100325 | Cutler | Mar 1992 | |
5217376 | Gosselin | Jun 1993 |
Entry |
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The P-Scope Instruction Manual, Contour Drawing Inc., Valley Forge, PA, Received in PTO: Dec. 2, 1982. |
The Sax Arts and Crafts Catalog, 1988 at page 168 thereof depicting an artograph RT 210 Table Top Projector. The catalog was published by Sax Arts and Crafts, P.O. Box 51710, New Berlin, Wisconsin 53151. Telephone #: 414-784-6881. A copy is herewith submitted. |