US2704231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic bearings
Assignee: Individual
•
Filing: 1949-03-31
•
Granted: 1955-03-15
•
Expires: 1969-03-31
Abstract
No abstract record available.
Inventors
- 👤 Goldsmith Ernest Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:14
CPC Classifications
F; F16; F16C; F16C39/00; F16C39/06; F16C39/063; F16C32/00; F16C32/04; F16C32/0406; F16C32/0408; F16C32/0423; F16C2370/00; Y; Y10; Y10T; Y10T74/00; Y10T74/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-14 | 1958-09-13 | 1959-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-14 | 1962-09-13 | 1963-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-14 | 1966-09-13 | 1967-03-15 | $7700.00 | Window Closed / Lapsed |