US2438867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling shrouds on impellers
Assignee: RTX Corp
•
Filing: 1945-06-01
•
Granted: 1948-03-30
•
Expires: 1965-06-01
Abstract
No abstract record available.
Inventors
- 👤 Albert M Rockwell
- 👤 Albert H Beaufrere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:14
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/22; F01D5/225; B; B25; B25B; B25B27/00; B25B27/02; B25B27/023; Y; Y10; Y10S; Y10S29/00; Y10S29/035; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US21494A
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US1017683A
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US2051998A
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US2304721A
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US2317217A
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US2360440A
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US2392858A
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US2411439A
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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) | 1951-03-30 | 1951-09-29 | 1952-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-30 | 1955-09-29 | 1956-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-30 | 1959-09-29 | 1960-03-30 | $7700.00 | Window Closed / Lapsed |