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US1389337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion engine
Assignee: Individual
•
Filing: 1916-03-22
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Granted: 1921-08-30
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Expires: 1936-03-22
Abstract
No abstract record available.
Inventors
- 👤 Merl R Wolfard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:50
CPC Classifications
F; F02; F02B; F02B9/00; F02B9/02; F02B9/04; F02B33/00; F02B33/02; F02B33/06; F02B33/20; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
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) | 1924-08-29 | 1925-02-28 | 1925-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-08-29 | 1929-02-28 | 1929-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-08-29 | 1933-02-28 | 1933-08-30 | $7700.00 | Window Closed / Lapsed |