US D197337 S
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Description (OCR text may contain errors)
United States Patent 0 Des. 197,337
Patented Jan. 14, 1964 TELEPHONE AIVIPLIFIER Jack J. Zimmerman, 143 S. Delaplaine Road,
Filed Mar. 19, 1963, Ser. No. 74,038
Term of patent 7 years (Cl. DIG-14) FIGURE 1 is a perspective view of a telephone amplifier, showing my new design;
FIGURE 2 is a side elevational view, the opposite side being substantially a mirror image thereof;
FIGURE 3 is a rear elevational view; and
FIGURE 4 is a cross sectional view, taken substantially on the line 44 in FIGURE 1.
The broken showing of a handset in FIGURE 2 and legible matter in FIGURE 1 is for illustrative purposes only. A portion of FIGURE 1 is diagonally lined to indicate transparency.
The ornamental design for a telephone amplifier, substantially as shown and described.
References Cited in the tile of this patent UNITED STATES PATENTS D. 167,674 Branson Sept. 9, 1952 D. 189,781 Barkin Feb. 21, 1961 2,987,575 Chalfin June 6, 1961 OTHER REFERENCES Industrial Design, February 1956, page 79, Inter-ofiice telephone, Facit, Inc.
Premium Practice, April 1962, page 36, PHA Telephone Amplifier.