US1264893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston for internal-combustion engines.
Assignee: Individual
•
Filing: 1916-01-22
•
Granted: 1918-05-07
•
Expires: 1936-01-22
Abstract
No abstract record available.
Inventors
- 👤 Donald James Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:49
CPC Classifications
F; F02; F02F; F02F3/00; F02F3/02; F05; F05C; F05C2201/00; F05C2201/02; F05C2201/021; Y; Y10; Y10S; Y10S164/00; Y10S164/08
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) | 1921-05-06 | 1921-11-05 | 1922-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-05-06 | 1925-11-05 | 1926-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-05-06 | 1929-11-05 | 1930-05-07 | $7700.00 | Window Closed / Lapsed |