US1826638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine and method of working the same
Assignee: Daimler Motoren Gesellschaft
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Filing: 1921-08-30
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Granted: 1931-10-06
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Expires: 1941-08-30
Abstract
No abstract record available.
Inventors
- 👤 Schwerdtfeger Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:57
CPC Classifications
F; F02; F02B; F02B1/00; B; B60; B60B; B60B35/00; B60B35/12; B60B35/16; B60B35/163; B60B27/00; B60B27/0015; B60B27/0021; B60B27/06; B60B27/065; B60B35/004; B60B35/121; B60B35/127; F02B33/00; B60B2310/00; B60B2310/30; B60B2310/305; B60B2380/00; B60B2380/10; B60B2380/12; B60B2900/00; B60B2900/10; B60B2900/113; F02B2700/00; F02B2700/02; F02B2700/023; F02B2720/00; F02B2720/12; F02B2720/124; F02M; F02M2700/00; F02M2700/33; F02M2700/331; F02M2700/335; 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) | 1934-10-05 | 1935-04-06 | 1935-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-05 | 1939-04-06 | 1939-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-05 | 1943-04-06 | 1943-10-06 | $7700.00 | Window Closed / Lapsed |