US2458447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine cylinder
Assignee: Nordberg Manufacturing Co
•
Filing: 1945-02-03
•
Granted: 1949-01-04
•
Expires: 1965-02-03
Abstract
No abstract record available.
Inventors
- 👤 Tacchella Adolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:40
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/02; F02F1/10; F02F1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1245451A
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GB126330A
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GB166302A
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GB213801A
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US1500861A
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US1599242A
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US2113904A
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GB512775A
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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) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |