IP Library › Granted Patent US 4,689,608
Granted Patent Utility
US 4,689,608 · App. 06/693,638

Magnetically snap actuated contact keyboard apparatus

Inventors: Frank J. Bolda, John P. McKnight, Russell J. Sturm
Patented Case View Patent ↗
Granted: Aug 25, 1987 Filed: Jan 22, 1985
Inventors
Frank J. Bolda
John P. McKnight
Russell J. Sturm
Assignee (at issue)
International Business Machines Corporation

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Quick Facts
Patent No.
US 4,689,608
App. No.
06/693,638
Filed
1985-01-22
Granted
1987-08-25
Kind
A