US837256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone toll apparatus.
Assignee: BAIRD Manufacturing Co
•
Filing: 1903-05-11
•
Granted: 1906-11-27
•
Expires: 1923-05-11
Abstract
No abstract record available.
Inventors
- 👤 Edward P Baird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:41
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/24
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) | 1909-11-26 | 1910-05-28 | 1910-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-11-26 | 1914-05-28 | 1914-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-11-26 | 1918-05-28 | 1918-11-27 | $7700.00 | Window Closed / Lapsed |