US2812158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stator ring construction
Assignee: RTX Corp
•
Filing: 1951-12-06
•
Granted: 1957-11-05
•
Expires: 1971-12-06
Abstract
No abstract record available.
Inventors
- 👤 Byron H Shinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:38
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/52; F04D29/54; F04D29/541; F04D29/542; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB326973A
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US1932264A
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US1932278A
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US2201099A
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US2110679A
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US2316813A
Cited
US2264877A
Cited
US2445661A
Cited
GB548649A
Cited
US2640319A
Cited
US2658719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |