IP Library › Granted Patent US 4,886,320
Granted Patent Utility
US 4,886,320 · App. 07/231,931

Vital pressure regulating system for railroad cars

Inventors: Asaji Imanaka, Kazutaka Nagata
Patented Case View Patent ↗
Granted: Dec 12, 1989 Filed: Aug 15, 1988
Inventors
Asaji Imanaka
Kazutaka Nagata
Assignee (at issue)
Nippon Air Brake Co., Ltd.

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Quick Facts
Patent No.
US 4,886,320
App. No.
07/231,931
Filed
1988-08-15
Granted
1989-12-12
Kind
A