US850402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay.
Assignee: AT&T Inc
•
Filing: 1906-03-31
•
Granted: 1907-04-16
•
Expires: 1926-03-31
Abstract
No abstract record available.
Inventors
- 👤 Charles E Scribner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:17
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/24
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) | 1910-04-15 | 1910-10-15 | 1911-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-04-15 | 1914-10-15 | 1915-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-04-15 | 1918-10-15 | 1919-04-16 | $7700.00 | Window Closed / Lapsed |