US1144870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Code-signal device.
Assignee: Sohm Electric Signal & Recording Co
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Filing: 1913-08-23
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Granted: 1915-06-29
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Expires: 1933-08-23
Abstract
No abstract record available.
Inventors
- 👤 Alfred L Sohm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:32
CPC Classifications
H; H03; H03M; H03M1/00
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) | 1918-06-28 | 1918-12-28 | 1919-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-06-28 | 1922-12-28 | 1923-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-06-28 | 1926-12-28 | 1927-06-29 | $7700.00 | Window Closed / Lapsed |