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Patents
Patents Represented by Law Firm Sandler, Greenblum & Burnstein
Patents Represented by Law Firm Sandler, Greenblum & Burnstein
Combined face plate and push button actuator of controlling an elevator
Patent number:
D339543
Type:
Grant
Filed:
February 28, 1990
Date of Patent:
September 21, 1993
Assignee:
Inventio AG
Inventor:
Adolf H. Martin