US3384442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion apparatus
Assignee: Motors Liquidation Co
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Filing: 1966-10-20
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Granted: 1968-05-21
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Expires: 1986-10-20
Abstract
No abstract record available.
Inventors
- 👤 Elmer R Stewart
- 👤 Francis J Verkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:19
CPC Classifications
F; F23; F23Q; F23Q3/00; F23Q3/008; F23C; F23C3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |