Stereo headrest for dental chairs
Description
FIG. 1 is a perspective view of a stereo headrest for dental chairs showing our new design, with its flexible strap portion folded under;
FIG. 2 is a front elevational view thereof, with its flexible strap portion extended;
FIG. 3 is a side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof; and
FIG. 6 is a back elevational view thereof.
Referenced Cited
U.S. Patent Documents
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D198211 | May 1964 | Apel |
D211523 | June 1968 | Duern |
D218234 | August 1970 | Belk |
D233200 | October 1974 | Madl |
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3098128 | July 1963 | Audin |
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3366417 | January 1968 | Belk |
3384719 | May 1968 | Lanzara |
3452836 | July 1969 | Carsello et al. |
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Patent History
Patent number: D277630
Type: Grant
Filed: Sep 29, 1982
Date of Patent: Feb 19, 1985
Inventors: David V. Olson (Minneapolis, MN), Steven T. Matthews (Bloomington, MN)
Primary Examiner: Bruce W. Dunkins
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 6/428,126
Type: Grant
Filed: Sep 29, 1982
Date of Patent: Feb 19, 1985
Inventors: David V. Olson (Minneapolis, MN), Steven T. Matthews (Bloomington, MN)
Primary Examiner: Bruce W. Dunkins
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 6/428,126
Classifications
Current U.S. Class:
D/6501