US3500106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode
Assignee: Bell and Howell Co
•
Filing: 1965-09-10
•
Granted: 1970-03-10
•
Expires: 1985-09-10
Abstract
No abstract record available.
Inventors
- 👤 Jean Berchtold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:40
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/15; H01J9/00; H01J9/02; H01J9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2468129A
Cited
US2855536A
Cited
US2847328A
Cited
US2878409A
Cited
US3114070A
Cited
US3119947A
Cited
US3281858A
Cited
US3312856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |