US2520180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch plate
Assignee: Dana Inc
•
Filing: 1943-02-17
•
Granted: 1950-08-29
•
Expires: 1963-02-17
Abstract
No abstract record available.
Inventors
- 👤 Thelander W Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:08
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/10; F16F15/16; F16F13/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US454360A
Cited
US879058A
Cited
US926620A
Cited
US959170A
Cited
US1423904A
Cited
US1608877A
Cited
US2115383A
Cited
US2227838A
Cited
US2259422A
Cited
US2256868A
Cited
US2316820A
Cited
US2360731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |