Patent US6317692B2 successfully refreshed from Google Patents.
US2499554A
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US
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Charge forming device
Assignee: Bendix Aviation Corp
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Filing: 1944-10-13
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Granted: 1950-03-07
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Expires: 1964-10-13
Abstract
No abstract record available.
Inventors
- 👤 Emil O Wirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:31
CPC Classifications
F; F02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/022; F02D2700/0223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1972374A
Cited
GB452761A
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US2136959A
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US2156115A
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US2232392A
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US2227267A
Cited
US2224472A
Cited
US2238333A
Cited
US2316327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |