Patent US3989537A successfully refreshed from Google Patents.
Patent US1874682A successfully refreshed from Google Patents.
US1874682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion kngine
Assignee: Packard Motor Car Co
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Filing: 1930-07-21
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Granted: 1932-08-30
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Expires: 1950-07-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:06
CPC Classifications
F; F02; F02D; F02D15/00; F02D15/04; F02B; F02B3/00; F02B2720/00; F02B2720/22; F02B2720/225; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02B75/222
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) | 1935-08-30 | 1936-02-29 | 1936-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-08-30 | 1940-02-29 | 1940-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-08-30 | 1944-02-29 | 1944-08-30 | $7700.00 | Window Closed / Lapsed |