Patents by Inventor Fred Muller, Jr.

Fred Muller, 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).

  • Keyless padlock
    Patent number: 3966247
    Abstract: A keyless padlock seal for shipping containers, highway trailers, railroad box cars and the like, comprising a lock body and a hasp which is spring-locked to said lock body. The hasp cannot be removed from the body without destruction of either the hasp or the body. A code-marked seal may be provided on the lock body and secured thereto in such manner that it cannot be removed or replaced without at least partial destruction of the padlock and evidence of tampering.
    Type: Grant
    Filed: June 4, 1973
    Date of Patent: June 29, 1976
    Assignee: Madge Canter Associates, Inc.
    Inventors: Fred Muller, Jr., Stanley Wolniak, Marshall Johnson, Elbert Spencer