Patent US1880531A successfully refreshed from Google Patents.
US1880531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air intake and exhaust mechanism of diesel type of engines
Assignee: GUIBERSON DIESEL ENGINE Co
•
Filing: 1930-10-04
•
Granted: 1932-10-04
•
Expires: 1950-10-04
Abstract
No abstract record available.
Inventors
- 👤 Feri A Thaheld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:28
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/06; F01L1/00; F01L1/12; F01L1/18; F01L1/181; F01L1/182; F01L2305/00; F02; F02F; F02F1/00; F02F1/24; F02F1/42; 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) | 1935-10-04 | 1936-04-04 | 1936-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-10-04 | 1940-04-04 | 1940-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-10-04 | 1944-04-04 | 1944-10-04 | $7700.00 | Window Closed / Lapsed |