Patents by Inventor Allen R. Trowbridge, Jr.

Allen R. Trowbridge, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cover for a telephone handset
    Patent number: 4964161
    Abstract: A cover for a telephone handset includes a monolithic, one-piece body that has speaker-covering and earpiece-covering holes defined therein, and a speaker filter element and an earpiece filter element removably mounted on the body in covering relationship with each of the holes. The filter elements are removed and replaced after each use of the cover so that germs on one handset will not be transmitted to the speaker or earpiece of another handset by the cover.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: October 16, 1990
    Inventor: Allen R. Trowbridge, Jr.
  • Telephone cover
    Patent number: D317312
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: June 4, 1991
    Inventor: Allen R. Trowbridge, Jr.