US2856240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic suspension control system
Assignee: Bill Jack Scientific Instrument Co
•
Filing: 1955-11-04
•
Granted: 1958-10-14
•
Expires: 1975-11-04
Abstract
No abstract record available.
Inventors
- 👤 John B Breazeale
- 👤 Charles G Mcilwraith
- 👤 Edward N Dacus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:48
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/04; F16C32/0406; F16C32/044; F16C32/0444; B; B06; B06B; B06B1/00; B06B1/02; B06B1/04; Y; Y10; Y10S; Y10S164/00; Y10S164/09; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1232; Y10T74/125
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |