Patent US3535574A successfully refreshed from Google Patents.
US3535574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image pick-up tube with a photosensitive transmission secondary electron multiplication layer
Assignee: Panasonic Holdings Corp
•
Filing: 1968-02-12
•
Granted: 1970-10-20
•
Expires: 1988-02-12
Abstract
No abstract record available.
Inventors
- 👤 Haruo Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:39
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2683832A
Cited
US2579772A
Cited
US2910602A
Cited
US3148297A
Cited
US3128406A
Cited
US3213315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |