US3487258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image intensifier with channel secondary emission electron multiplier having tilted channels
Assignee: US Philips Corp
•
Filing: 1968-02-20
•
Granted: 1969-12-30
•
Expires: 1988-02-20
Abstract
No abstract record available.
Inventors
- 👤 Brian William Manley
- 👤 John Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:57
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2942133A
Cited
US3001098A
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US3343025A
Cited
US3229142A
Cited
US3345534A
Cited
US3260876A
Cited
US3400291A
Cited
US3374380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |