US2858104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable gas turbine shroud ring segments
Assignee: AV Roe Canada Ltd
•
Filing: 1954-02-04
•
Granted: 1958-10-28
•
Expires: 1974-02-04
Abstract
No abstract record available.
Inventors
- 👤 Kelk George Frederick
- 👤 Klompas Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:44
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/08; F01D11/14; F01D11/20; F01D11/22; F02; F02C; F02C3/00; F02C3/04; F02C3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1352276A
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DE436567C
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US2447942A
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US2622790A
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US2544538A
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GB679916A
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GB689270A
Cited
DE852789C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |