Patent US2894255A successfully refreshed from Google Patents.
US2894255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way photoelectric translator
Assignee: AT&T Inc
•
Filing: 1954-11-29
•
Granted: 1959-07-07
•
Expires: 1974-11-29
Abstract
No abstract record available.
Inventors
- 👤 Richard P Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:32
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/46; G06F7/468; H; H04; H04Q; H04Q3/00; H04Q3/0004
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2633498A
Cited
US2597866A
Cited
US2594358A
Cited
US2657272A
Cited
US2628346A
Cited
US2721990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |