IP Library › Granted Patent US 5,568,921
Granted Patent Utility
US 5,568,921 · App. 08/142,687

Racquet stringing machine

Inventors: John Francis Lorentzen, Todd Colburn, Ray Mortvedt
Patented Case View Patent ↗
Granted: Oct 29, 1996 Filed: Oct 26, 1993
Inventors
John Francis Lorentzen
Todd Colburn
Ray Mortvedt
Assignee (at issue)
Ektelon

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Quick Facts
Patent No.
US 5,568,921
App. No.
08/142,687
Filed
1993-10-26
Granted
1996-10-29
Kind
A