US1406271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion engine
Assignee: Individual
•
Filing: 1921-01-17
•
Granted: 1922-02-14
•
Expires: 1941-01-17
Abstract
No abstract record available.
Inventors
- 👤 Henry C Michelsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:06
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/02; F01L1/026; F01L1/04; F01L1/047; F01L1/053; F02; F02B; F02B2275/00; F02B2275/20; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582
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) | 1925-02-13 | 1925-08-15 | 1926-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-02-13 | 1929-08-15 | 1930-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-02-13 | 1933-08-15 | 1934-02-14 | $7700.00 | Window Closed / Lapsed |