Patent US2947392A successfully refreshed from Google Patents.
US2947392A
Expired / Lapsed
US
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Control system for exhaust brake
Assignee: Mack Trucks Inc
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Filing: 1956-10-03
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Granted: 1960-08-02
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Expires: 1976-10-03
Abstract
No abstract record available.
Inventors
- 👤 Heine Lawrence Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:03
CPC Classifications
F; F01; F01L; F01L13/00; F01L2760/00; F01L2760/003; F01L2760/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1890790A
Cited
US2168232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |