Patent US2403489A successfully refreshed from Google Patents.
US2403489A
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Bearing construction for turbines or the like
Assignee: Federal Reserve Bank of Philadelphia
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Filing: 1941-08-29
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Granted: 1946-07-09
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Expires: 1961-08-29
Abstract
No abstract record available.
Inventors
- 👤 Birmann Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:03
CPC Classifications
F; F16; F16C; F16C27/00; F16C27/02; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F01D25/164; F16C17/00; F16C17/02; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F16C2360/00; Y; Y10; Y10S; Y10S29/00; Y10S29/023; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4932
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-07-08 | 1950-01-07 | 1950-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-08 | 1954-01-07 | 1954-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-08 | 1958-01-07 | 1958-07-09 | $7700.00 | Window Closed / Lapsed |