Patent US2522780A successfully refreshed from Google Patents.
US2522780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube and bourdon spring
Assignee: Taylor Instrument Co
•
Filing: 1947-07-15
•
Granted: 1950-09-19
•
Expires: 1967-07-15
Abstract
No abstract record available.
Inventors
- 👤 Charles H Dickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:42
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/04; F16F1/10; B; B21; B21F; B21F3/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49826; Y10T29/49877
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) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |