US3422806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Motors Liquidation Co
•
Filing: 1967-07-03
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Granted: 1969-01-21
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Expires: 1987-07-03
Abstract
No abstract record available.
Inventors
- 👤 John Z De Lorean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:18
CPC Classifications
F; F02; F02B; F02B67/00; F02B67/04; F02B67/06; F01; F01L; F01L1/00; F01L1/02; F01L1/04; F01L1/047; F01L1/053; F01L1/0532; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02F; F02F7/00; F02F7/006; F02B2075/1804; F02B2075/1832; F02B2275/00; F02B2275/06; F02B2275/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2466256A
Cited
US1173105A
Cited
US2001866A
Cited
US2963007A
Cited
US2831359A
Cited
US3352293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |