US3522948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable flow path seal
Assignee: Westinghouse Electric Corp
•
Filing: 1968-05-16
•
Granted: 1970-08-04
•
Expires: 1988-05-16
Abstract
No abstract record available.
Inventors
- 👤 Archie N Maccrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:01
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3404; F16J15/3408; F16J15/3412; F16J15/3416; F16J15/3432; F16J15/3464
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2761711A
Cited
US2761712A
Cited
US2814512A
Cited
US3144253A
Cited
US3179422A
Cited
US3347552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |