U.S. patent number D305,202 [Application Number 06/857,618] was granted by the patent office on 1989-12-26 for multi-vial level attachment for hand-held drills. This patent grant is currently assigned to The Arcair Company. Invention is credited to David E. Johnson.
United States Patent | D305,202 |
Johnson | December 26, 1989 |
Inventors: | Johnson; David E. (Lancaster, OH) |
---|---|
Assignee: | The Arcair Company (Lancaster,
OH) |
Appl. No.: | 06/857,618 |
Filed: | April 24, 1986 |
Current U.S. Class: | D8/70; D10/69 |
Field of Search: | ;D8/14,62-70 ;D10/69,74 ;33/334,347 |
D162841 | April 1951 | King |
D255504 | June 1980 | Vanderwerf |
1333559 | March 1920 | Moulton |
2820302 | January 1958 | Mitchell |
4125944 | November 1978 | Esposito et al. |
4141151 | February 1979 | Jansky |
4393599 | July 1983 | Sterrenberg |
1934717 | Feb 1970 | DE | |||
Dejon Co. advertising mailer for the "Drill-Level". . Do-It-Yourself retailing Aug. 1986, p. 32, "Drill-Level".. |
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