IP Library › Granted Patent US 4,898,499
Granted Patent Utility
US 4,898,499 · App. 07/164,442

Ball end mill

Inventors: Osamu Tsujimura, Tatsuo Arai, Masaaki Nakayama, Masayuki Okawa
Patented Case View Patent ↗
Granted: Feb 6, 1990 Filed: Mar 4, 1988
Inventors
Osamu Tsujimura
Tatsuo Arai
Masaaki Nakayama
Masayuki Okawa
Assignee (at issue)
Mitsubishi Kinzoku Kabushiki Kaisha

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Quick Facts
Patent No.
US 4,898,499
App. No.
07/164,442
Filed
1988-03-04
Granted
1990-02-06
Kind
A