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Patents
Patents Assigned to Doris J. Leeds
Patents Assigned to Doris J. Leeds
Headset for one-way private channel radio communications system
Patent number:
D263043
Type:
Grant
Filed:
January 23, 1980
Date of Patent:
February 16, 1982
Assignee:
Doris J. Leeds
Inventor:
Ross J. Petrie
Combined radio transmitter and cassette player for a one-way private channel communications system
Patent number:
D263139
Type:
Grant
Filed:
January 23, 1980
Date of Patent:
February 23, 1982
Assignee:
Doris J. Leeds
Inventor:
Ross J. Petrie
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