Patents by Inventor Alexander A. Birch

Alexander A. Birch 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).

  • Patent number: 4094099
    Abstract: A screen door hinged for cooperation with and actuation separate from an outer closure door, and comprising; a peripheral frame including a full length hinge supported side rail, a second laterally spaced and relatively parallel side rail having an interruption between its ends, and cross rails connecting the outer and inner ends of said second side rail to said first mentioned side rail for providing relatively separate upper and lower screen receptive sections; and a member bridging the interruption in said second side rail and offset inwardly between the inner ends thereof for providing, with other spacer and channel grooved members, a recessed and reinforced center section for accomodating the handle and latch mechanism of the outer door member and making them more accessible when used in close association with an outer door closure member.
    Type: Grant
    Filed: January 14, 1977
    Date of Patent: June 13, 1978
    Inventor: Alexander A. Birch