Patent US2820441A successfully refreshed from Google Patents.
US2820441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Design and arrangement of the coolant pump of internal combustion engines
Assignee: Hoval AG
•
Filing: 1955-05-27
•
Granted: 1958-01-21
•
Expires: 1975-05-27
Abstract
No abstract record available.
Inventors
- 👤 Scheiterlein Andreas
- 👤 Skatsche Othmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:05
CPC Classifications
F; F01; F01P; F01P5/00; F01P5/10; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2216802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |