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Patent:US424932


Patent:US 424932
Title:Adding-machine
Date:04.00.1989
Place:Birmingham, AL
Country:USA
Person:James F. Mays
Company:I. Berry De Kalb Turbeville
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US424932 (espacenet),  US424932 (uspto)


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