Patent US2533863A successfully refreshed from Google Patents.
US2533863A
Expired / Lapsed
US
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Charge forming device
Assignee: Bendix Aviation Corp
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Filing: 1944-06-09
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Granted: 1950-12-12
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Expires: 1964-06-09
Abstract
No abstract record available.
Inventors
- 👤 Emil O Wirth
- 👤 Barfod Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:03
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/14; F02D; F02D19/00; F02D19/12; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0261; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22447E
Cited
GB207986A
Cited
US1746358A
Cited
US2002483A
Cited
US2310984A
Cited
US2252415A
Cited
US2377607A
Cited
US2283021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |