US2541567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge
Assignee: Individual
•
Filing: 1946-04-01
•
Granted: 1951-02-13
•
Expires: 1966-04-01
Abstract
No abstract record available.
Inventors
- 👤 William E Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:21
CPC Classifications
E; E05; E05D; E05D7/00; E05D7/04; E05D7/0415; E05D7/0423; E05D7/0009; E05D7/0018; E05D7/0045; E05D2007/0484; E05Y; E05Y2900/00; E05Y2900/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US880317A
Cited
US2251865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |