US2423124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optical device
Assignee: AT&T Inc
•
Filing: 1943-01-30
•
Granted: 1947-07-01
•
Expires: 1963-01-30
Abstract
No abstract record available.
Inventors
- 👤 Gordon K Teal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:26
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/395; H01J29/45; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/40; H01J9/00; H01J9/20; H01J9/233
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1936514A
Cited
US1943395A
Cited
US1907124A
Cited
US2045984A
Cited
US2141375A
Cited
US2120765A
Cited
US2116901A
Cited
FR783646A
Cited
US2095782A
Cited
US2212923A
Cited
US2140994A
Cited
US2175689A
Cited
US2175691A
Cited
US2204251A
Cited
US2175701A
Cited
US2162808A
Cited
US2324505A
Cited
US2305576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-30 | 1950-12-30 | 1951-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-30 | 1954-12-30 | 1955-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-30 | 1958-12-30 | 1959-07-01 | $7700.00 | Window Closed / Lapsed |