Patent US2547157A successfully refreshed from Google Patents.
US2547157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutoff mechanism
Assignee: Individual
•
Filing: 1947-02-13
•
Granted: 1951-04-03
•
Expires: 1967-02-13
Abstract
No abstract record available.
Inventors
- 👤 James H Gibbons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:31
CPC Classifications
B; B23; B23D; B23D45/00; B23D45/18; B23D45/24; B23D36/00; B23D36/0008; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4728; Y10T83/4734; Y10T83/4766; Y10T83/478; Y10T83/4789
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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |