US1515523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion engine
Assignee: PENTAVERKEN AB
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Filing: 1922-12-05
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Granted: 1924-11-11
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Expires: 1942-12-05
Abstract
No abstract record available.
Inventors
- 👤 Skarlund Carl Axel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:45
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/20; F02B25/00; F02B25/14; F02B61/00; F02B61/04; F02B61/045; F02B75/02; F02B2075/022; F02B2075/025; F02B2075/1804; F02B2075/1808
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) | 1927-11-11 | 1928-05-12 | 1928-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-11-11 | 1932-05-12 | 1932-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-11-11 | 1936-05-12 | 1936-11-11 | $7700.00 | Window Closed / Lapsed |