US1685835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Program-selecting arrangement
Assignee: AT&T Inc
•
Filing: 1925-12-22
•
Granted: 1928-10-02
•
Expires: 1945-12-22
Abstract
No abstract record available.
Inventors
- 👤 Henry M Bascom
- 👤 Oscar M Arnold
- 👤 Robert L Pentland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:45
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/10; H04H20/103; H04H20/38; H04H20/65; H04H20/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-10-02 | 1932-04-02 | 1932-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-10-02 | 1936-04-02 | 1936-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-10-02 | 1940-04-02 | 1940-10-02 | $7700.00 | Window Closed / Lapsed |