Patent US2003485A successfully refreshed from Google Patents.
US2003485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust manifold and connection
Assignee: Cooper Bessemer Corp
•
Filing: 1931-07-11
•
Granted: 1935-06-04
•
Expires: 1951-07-11
Abstract
No abstract record available.
Inventors
- 👤 Hewitt A Gehres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:06
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1805; F01N13/08; F01N13/10; F01N3/00; F01N3/02; F01N3/04; F01N3/043; F01N3/046; 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) | 1938-06-03 | 1938-12-03 | 1939-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-06-03 | 1942-12-03 | 1943-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-06-03 | 1946-12-03 | 1947-06-04 | $7700.00 | Window Closed / Lapsed |