US2521918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decelerometer
Assignee: Individual
•
Filing: 1945-10-24
•
Granted: 1950-09-12
•
Expires: 1965-10-24
Abstract
No abstract record available.
Inventors
- 👤 Donald E Hudson
- 👤 Frederick C Lindvall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:08
CPC Classifications
G; G01; G01P; G01P1/00; G01P1/12; G01P1/127; G01P15/00; G01P15/02; G01P15/08; G01P15/135
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1397525A
Cited
US1519473A
Cited
FR637939A
Cited
US1787940A
Cited
US1970483A
Cited
US2053436A
Cited
US1921833A
Cited
US2120703A
Cited
US2237326A
Cited
US2283180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |