US2987049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder and valve assembly
Assignee: Dura Corp
•
Filing: 1957-03-29
•
Granted: 1961-06-06
•
Expires: 1977-03-29
Abstract
No abstract record available.
Inventors
- 👤 Stewart B Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:42
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2343265A
Cited
US2317549A
Cited
US2311864A
Cited
US2366121A
Cited
US2478818A
Cited
US2456429A
Cited
US2468943A
Cited
US2479398A
Cited
US2586683A
Cited
US2638125A
Cited
US2682256A
Cited
US2759245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |