US3057543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial flow compressor
Assignee: Ingersoll Rand Co
•
Filing: 1960-02-05
•
Granted: 1962-10-09
•
Expires: 1980-02-05
Abstract
No abstract record available.
Inventors
- 👤 John B Marsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:04
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/08; F04C18/12; F04C18/14; F04C18/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2578196A
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US2531603A
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US2705922A
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US2869473A
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US2821929A
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US2885965A
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US2833224A
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US2915876A
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US2982221A
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US2990783A
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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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |