US2908050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door closer
Assignee: SHELBY SPRING HINGE Co
•
Filing: 1957-09-23
•
Granted: 1959-10-13
•
Expires: 1977-09-23
Abstract
No abstract record available.
Inventors
- 👤 Harold R Sullivan
- 👤 Jr Campbell A Neptune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:30
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/12; E05F1/123; Y; Y10; Y10T; Y10T24/00; Y10T24/40; Y10T24/4079; Y10T24/4084
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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |