Patent US2603822A successfully refreshed from Google Patents.
US2603822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-piece hinge
Assignee: Individual
•
Filing: 1947-04-08
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Granted: 1952-07-22
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Expires: 1967-04-08
Abstract
No abstract record available.
Inventors
- 👤 Fred S Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:21
CPC Classifications
E; E05; E05D; E05D7/00; E05D7/10; E05D7/1061; E05D7/1066
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |