Patent US1237496A successfully refreshed from Google Patents.
US1237496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telegraphone.
Assignee: Individual
•
Filing: 1911-06-08
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Granted: 1917-08-21
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Expires: 1931-06-08
Abstract
No abstract record available.
Inventors
- 👤 Charles K Fankhauser
- 👤 Arthur M Mccrillis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:10
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/46; G11B15/54
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) | 1920-08-20 | 1921-02-19 | 1921-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-08-20 | 1925-02-19 | 1925-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-08-20 | 1929-02-19 | 1929-08-21 | $7700.00 | Window Closed / Lapsed |