US2520378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion engine
Assignee: Individual
•
Filing: 1943-10-11
•
Granted: 1950-08-29
•
Expires: 1963-10-11
Abstract
No abstract record available.
Inventors
- 👤 Veit Theodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:23
CPC Classifications
F; F02; F02B; F02B21/00; F02B19/00; F02B19/08; F02B19/14; F02B19/16; F02B19/165; F02B2019/006; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1320064A
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US1605838A
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US841830A
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US861726A
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US1301675A
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US1754735A
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US1745884A
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US2076030A
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DE562673C
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US2012086A
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US2133478A
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GB463362A
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US2317536A
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US2254438A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |