IP Library › Granted Patent US 4,145,644
Granted Patent Utility
US 4,145,644 · App. 05/811,738

Dual stepping angle stepper motor drive

Inventor: Raymond Liu
Patented Case View Patent ↗
Granted: Mar 20, 1979 Filed: Jun 30, 1977
Inventor
Raymond Liu
Assignee (at issue)
PerkinElmer, Inc.

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Quick Facts
Patent No.
US 4,145,644
App. No.
05/811,738
Filed
1977-06-30
Granted
1979-03-20
Kind
A