Back pack frame for dental equipment

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Description

FIG. 1 is a left side elevational view of a back pack frame for dental equipment showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof.

The partial showing of surface shading indicating a fabric texture on the center band in FIGS. 1 and 3 is understood to be continuous over the entire surface of the band.

Referenced Cited
U.S. Patent Documents
3464607 September 1969 Grace et al.
3797718 March 1974 Plant
Other references
  • Gerry Mountain Climbing & Camping Eq. Cat., 1964, 65 Winter, p. 25, top of page.
Patent History
Patent number: D252176
Type: Grant
Filed: Sep 29, 1977
Date of Patent: Jun 26, 1979
Inventors: Robert J. Mallien (Milwaukee, WI), Charles E. Jordan (Shorewood, WI)
Primary Examiner: Joel Stearman
Assistant Examiner: George P. Word
Attorney: Thad F. Kryshak
Application Number: 5/837,741
Classifications
Current U.S. Class: D03/32
International Classification: D0399;