Patents Assigned to Commterm Inc.
  • Page power conversion apparatus for battery charging
    Patent number: 4044292
    Abstract: Compact conversion apparatus fits within a small space in a densely-constructed, battery-powered pager to convert the unit from use only with non-rechargeable replacement batteries to operation with a rechargeable battery. Notwithstanding space limitations, the conversion apparatus leaves the battery secure against an accidental short circuit at the newly-added, externally-accessible power input.
    Type: Grant
    Filed: April 1, 1976
    Date of Patent: August 23, 1977
    Assignee: Commterm Inc.
    Inventor: James J. Tomlin