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Patent:US1950183


Patent:US 1950183
Title:Automatic rounding off mechanism for calculating machines
Date:06.03.1934
Place:Sommerda
Country:USA
Person:Kottmann, August (P)
Company:Rheinmetall (P)
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Keywords:
Link to the patent office:
(without guarantee)
 US1950183 (espacenet),  US1950183 (uspto)


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