US3390830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing of horizontally-split centrifugal compressors
Assignee: Individual
•
Filing: 1967-04-14
•
Granted: 1968-07-02
•
Expires: 1987-04-14
Abstract
No abstract record available.
Inventors
- 👤 Kahane Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:25
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/24; F01D25/243; F04; F04D; F04D17/00; F04D17/08; F04D17/10; F04D17/12; F04D17/122; F04D17/125; F04D29/00; F04D29/08; F04D29/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1497652A
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US1607234A
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US1791810A
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US1902406A
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GB363835A
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US2352583A
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US2632395A
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US2532891A
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US2679411A
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US2590803A
Cited
US3139786A
Cited
US3055538A
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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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |