US2989285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor construction
Assignee: Studebaker Packard Corp
•
Filing: 1958-09-18
•
Granted: 1961-06-20
•
Expires: 1978-09-18
Abstract
No abstract record available.
Inventors
- 👤 Elmer P Warnken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:29
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US532232A
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US1073623A
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US1118361A
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US1263448A
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US2657008A
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US2685405A
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US2819869A
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US2848190A
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US2844354A
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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) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |