Patent US4040798A successfully refreshed from Google Patents.
Patent USRE27698E successfully refreshed from Google Patents.
USRE27698E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Le roy
Assignee: —
•
Filing: 1968-07-15
•
Granted: 1973-07-17
•
Expires: 1988-07-15
Abstract
Abstract A MAGNETIC CORRECTION DEVICE FOR USE WITH CATHODE RAY TUBES HAVING A FACILITY FOR EFFECTING LATERAL BEAM CORRECTION WITH MULTI-POLE MAGNET RINGS. MOUNTING STRUCTURES ARE ASSOCIATED WITH THE MAGNET RINGS IN SUCH A MANNER AS TO INSURE THAT ROTATION OF ONE MAGNET RING WILL BE ACCOMPANIED BY AN EQUAL AND OPPOSITE ROTATION OF THE OTHER MAGNET RING, THE ASSOCIATED STRUCTURE ALSO LIMITS THE ROTATION OF EACH MAGNET TO AN APPROPRIATE ARCUATE DISTANCE. THE MOUNTING STRUCTURE FURTHER SERVES TO ESTABLISH THE POSITIONS OF THE MAGNET POLES RELATIVE TO THE BEAM POSITIONS SUCH THAT VERTICAL COMPONENTS OF BEAM MOTION ARE MINIMIZED.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:11
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/701; H01J29/702; H01J29/703
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |