US777312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiplex telegraph system.
Assignee: MARIE V GEHRING
•
Filing: 1904-01-18
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Granted: 1904-12-13
•
Expires: 1924-01-18
Abstract
No abstract record available.
Inventors
- 👤 Harry Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:21
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/0095
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) | 1907-12-13 | 1908-06-13 | 1908-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-12-13 | 1912-06-13 | 1912-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-12-13 | 1916-06-13 | 1916-12-13 | $7700.00 | Window Closed / Lapsed |