US2939626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbo-compressor
Assignee: De Laval Steam Turbine Co
•
Filing: 1957-12-27
•
Granted: 1960-06-07
•
Expires: 1977-12-27
Abstract
No abstract record available.
Inventors
- 👤 Birmann Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:19
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/16; F01D25/166; F01D25/162; F01D25/164; F01D5/00; F01D5/02; F01D5/04; F05; F05D; F05D2220/00; F05D2220/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1354129A
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US2184197A
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US2322824A
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US2390506A
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US2577179A
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US2480095A
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US2709893A
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US2693149A
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US2795371A
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US2805819A
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US2843311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |