Patent
   D269267
Priority
Sep 14 1982
Filed
Sep 14 1982
Issued
Jun 07 1983
Expiry
Jun 07 1997
Assg.orig
Entity
unknown
8
5
n/a
The ornamental design for a telephone amplifier, as shown and described.

FIG. 1 is a top perspective view of a telephone amplifier showing my new design;

FIG. 2 is a bottom rear perspective view thereof; and

FIG. 3 is a front perspective view taken at a reduced scale and connected to a telephone handset.

The broken lines representing the conventional telephone are shown for illustrative purposes.

Brown, Dwight C.

Patent Priority Assignee Title
D339140, Aug 07 1991 TELEAN TECHNOLOGY LIMTIED Telephone tone dialer
D339353, Aug 28 1991 Nimrod International Sales Co., Inc. Phone home dialer
D382265, Jun 27 1996 Polycom, Inc. Speakerphone
D434747, Mar 08 1999 Philips Electronics North America Corporation Speakerphone module for video conferencing system
D444777, Mar 08 1999 Philips Electronics North America Corporation Speakerphone module for video conferencing system
D870085, Dec 18 2017 SHENZHEN FUZHIXING ELECTRONICS CO , LTD Signal amplifier for mobile phone
D870086, Dec 18 2017 SHENZHEN FUZHIXING ELECTRONICS CO , LTD Signal amplifier for mobile phone
D898710, Jul 10 2019 Wireless intercom headset
Patent Priority Assignee Title
3301955,
3619507,
4151376, Jan 24 1977 Plantronics, Inc Amplifier for telephone handset
201021,
230487,
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