US2428708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbosupercharger
Assignee: Individual
•
Filing: 1943-10-22
•
Granted: 1947-10-07
•
Expires: 1963-10-22
Abstract
No abstract record available.
Inventors
- 👤 Heftler Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:25
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B37/18; F02B37/183; F02B37/186; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1267880A
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US1063596A
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US1097259A
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US1156613A
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US1263056A
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US1280812A
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US1346563A
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US1557793A
Cited
GB285811A
Cited
US2192703A
Cited
US2247151A
Cited
US2386096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |