US1107946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder-head for internal-combustion engines.
Assignee: Individual
•
Filing: 1913-02-24
•
Granted: 1914-08-18
•
Expires: 1933-02-24
Abstract
No abstract record available.
Inventors
- 👤 Knut Jonas Elias Hesselman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:28
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F2001/244; F02F2001/247
Claims Analysis
Total Claims: 0
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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) | 1917-08-17 | 1918-02-16 | 1918-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-08-17 | 1922-02-16 | 1922-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-08-17 | 1926-02-16 | 1926-08-18 | $7700.00 | Window Closed / Lapsed |