Patent US2054581A successfully refreshed from Google Patents.
Patent US2421901A successfully refreshed from Google Patents.
US2421901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical movement
Assignee: Individual
•
Filing: 1944-09-07
•
Granted: 1947-06-10
•
Expires: 1964-09-07
Abstract
No abstract record available.
Inventors
- 👤 Bill B Murad
- 👤 John S Barbic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:44
CPC Classifications
B; B23; B23B; B23B45/00; B23B45/06; Y; Y10; Y10T; Y10T279/00; Y10T279/35; Y10T408/00; Y10T408/65; Y10T408/675; Y10T408/6793; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304; Y10T74/18312
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-09 | 1950-12-09 | 1951-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-09 | 1954-12-09 | 1955-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-09 | 1958-12-09 | 1959-06-10 | $7700.00 | Window Closed / Lapsed |