Patent US2086427A successfully refreshed from Google Patents.
US2086427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder head for internal combustion engines
Assignee: Eclipse Aviation Corp
•
Filing: 1933-08-02
•
Granted: 1937-07-06
•
Expires: 1953-08-02
Abstract
No abstract record available.
Inventors
- 👤 Frank C Mock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:00
CPC Classifications
F; F02; F02F; F02F3/00; F02F3/26; F02B; F02B19/00; F02B19/12; F02B23/00; F02B23/08; F02B23/10; F02B23/104; F02M; F02M69/00; F02B2023/106; F02B75/00; F02B75/12; F02B2075/125; F02B2275/00; F02B2275/22; F02B2720/00; F02B2720/15; F02B2720/152; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-07-05 | 1941-01-04 | 1941-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-05 | 1945-01-04 | 1945-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-05 | 1949-01-04 | 1949-07-06 | $7700.00 | Window Closed / Lapsed |