Patent US3513316A successfully refreshed from Google Patents.
US3513316A
Expired / Lapsed
US
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Atr device having transparent slab on which is deposited an ultra-thin photocathode
Assignee: Bio Rad Laboratories Inc
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Filing: 1967-12-07
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Granted: 1970-05-19
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Expires: 1987-12-07
Abstract
No abstract record available.
Inventors
- 👤 Tomas Hirschfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:04
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/34; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/38; H01J40/00; H01J40/02; H01J2201/00; H01J2201/34; H01J2201/342; H01J2201/3421; H01J2201/3426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |