US2519702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplex spring absorption unit
Assignee: Individual
•
Filing: 1946-09-24
•
Granted: 1950-08-22
•
Expires: 1966-09-24
Abstract
No abstract record available.
Inventors
- 👤 Cecil S Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:29
CPC Classifications
F; F16; F16F; F16F3/00; F16F3/02; F16F3/04; F16F3/06; F16F2230/00; F16F2230/0052; F16F2230/007
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1515346A
Cited
US1952102A
Cited
US2013756A
Cited
US2136908A
Cited
US2215743A
Cited
US2425565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |