US2990202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Labyrinth face seal plate
Assignee: RTX Corp
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Filing: 1958-09-18
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Granted: 1961-06-27
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Expires: 1978-09-18
Abstract
No abstract record available.
Inventors
- 👤 William T Dennison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:09
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/18; F01D25/183; F01D11/00; F01D11/003; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/80; F16J; F16J15/00; F16J15/16; F16J15/162; F16J15/34; F16J15/3404; F16C19/00; F16C19/22; F16C19/24; F16C19/26; F16C2360/00; F16C2360/23; Y; Y10; Y10S; Y10S277/00; Y10S277/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |