US2700969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder head of internal-combustion engines
Assignee: Individual
•
Filing: 1949-09-30
•
Granted: 1955-02-01
•
Expires: 1969-09-30
Abstract
No abstract record available.
Inventors
- 👤 Friedrich K H Nallinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:52
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4285; F02F2001/244; F02F2001/245; F02F2200/00; F02F2200/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2492582A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |