US3011101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phototube control circuit
Assignee: Individual
•
Filing: 1957-11-04
•
Granted: 1961-11-28
•
Expires: 1977-11-04
Abstract
No abstract record available.
Inventors
- 👤 Sr Francis Merritt Boyce
- 👤 Boyce Marguerite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:03
CPC Classifications
H; H01; H01J; H01J40/00; H01J40/02; H01J40/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2507001A
Cited
US2351229A
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US2385725A
Cited
US2416595A
Cited
US2466634A
Cited
US2466751A
Cited
US2472945A
Cited
US2715720A
Cited
US2821670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |