U.S. patent number D336,131 [Application Number 07/770,294] was granted by the patent office on 1993-06-01 for instrument support attachment for dental equipment. This patent grant is currently assigned to A-Dec, Inc.. Invention is credited to Larry D. Lietz, Carl G. Nordstrom, Larry D. Osterhoudt.
United States Patent | D336,131 |
Nordstrom , et al. | June 1, 1993 |
Inventors: | Nordstrom; Carl G. (Lake Oswego, OR), Lietz; Larry D. (Dundee, OR), Osterhoudt; Larry D. (Newberg, OR) |
---|---|
Assignee: | A-Dec, Inc. (Newberg,
OR) |
Appl. No.: | 07/770,294 |
Filed: | October 1, 1991 |
Current U.S. Class: | D24/128 |
Field of Search: | ;D24/127-128 ;D6/552,569-572 ;211/60.1,70.6,86,89 ;248/309.1,310,312,316.1 ;433/49,53 |
D162224 | February 1951 | Ricard |
D190429 | May 1961 | Hoagland |
D252429 | July 1979 | Morin |
D273162 | March 1984 | Halverson |
D298355 | November 1988 | Young |
3318457 | May 1967 | Krashoff |
3696920 | October 1971 | Lahay |
4871074 | October 1989 | Bryson et al. |
2 page composite of A-Dec, Inc. Equipment catalog showing instrument holder available in 1969, 1974, 1976, 1980, and 1990.. |
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