Patent US4939703A successfully refreshed from Google Patents.
Patent US3400272A successfully refreshed from Google Patents.
US3400272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two dimensional scanner having back-to-back photodiodes
Assignee: International Business Machines Corp
•
Filing: 1965-06-01
•
Granted: 1968-09-03
•
Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Dym Herbert
- 👤 Robert J Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:29
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/18; H04; H04N; H04N25/00; H04N25/70; H04N25/76; H04N25/779; H10F99/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3317733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |