US1132581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating combustion-engines.
Assignee: Deutsche Automobil-Construktions-Ges M B H
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Filing: —
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Granted: 1915-03-23
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Expires: 1932-03-23
Abstract
No abstract record available.
Inventors
- 👤 Hans Heinrich Hein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:25
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/30; F02D41/3011; F02D41/3017; F02D41/3035; F02D41/3041; F02D41/3047; F02B; F02B1/00; F02B1/12; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
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) | 1918-03-22 | 1918-09-21 | 1919-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-03-22 | 1922-09-21 | 1923-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-03-22 | 1926-09-21 | 1927-03-23 | $7700.00 | Window Closed / Lapsed |