Coin operated box telephone unit

- Burd, Bartz & Gutenkauf
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Description

FIG. 1 is a perspective view of a coin-operated box telephone unit showing my new design;

FIGS. 2 and 3 are respectively front and rear elevational views thereof;

FIGS. 4 and 5 are respectively left and right side elevational views thereof; and

FIGS. 6 and 7 are respectively top and bottom plan views thereof.

Referenced Cited
U.S. Patent Documents
D85107 September 1931 Lum
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D197974 April 1964 Dreyfuss
D208359 August 1967 Gilbert
D208476 September 1967 La Barge
D227783 July 1973 Janda et al.
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D256692 September 2, 1980 Genaro et al.
D259044 April 28, 1981 Schmidt
D261728 November 10, 1981 Khula et al.
D265558 July 27, 1982 Fox et al.
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Foreign Patent Documents
2155487 November 1971 DEX
Other references
  • Telephony, 9/11/81, at p. 99: Marlee Electronics Corp.: Model 5ED. (British) Post Office Electrical Engineers' Journal: vol. 74, Oct. 1981, at p. 240, FIG. 5(a) Prepayment Payphone. Grand Commn. Booklet "Telephone Headquarters of America". Northern Supply Catalog-p. C373, Pay Stations.
Patent History
Patent number: D289159
Type: Grant
Filed: Mar 30, 1984
Date of Patent: Apr 7, 1987
Assignee: Burd, Bartz & Gutenkauf (Minneapolis, MN)
Inventor: Robert V. Albertson (Wayzata, MN)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Horace B. Fay
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 6/595,500
Classifications
Current U.S. Class: D14/55