JPS5252452A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
A hinge device for a hinged door
Assignee: Individual
•
Filing: 1975-10-25
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Granted: —
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Expires: 1995-10-25
Abstract
Abstract PURPOSE: To close an open door by means of force of a return spring and simultaneously control a closing speed of the door by means of a hydraulic pump to a proper level. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Shozo Iwai
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-03 02:12
CPC Classifications
—
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