Patent US687948A successfully refreshed from Google Patents.
US687948A
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US
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Electric signaling and indicating apparatus.
Assignee: Individual
•
Filing: 1901-05-13
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Granted: 1901-12-03
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Expires: 1921-05-13
Abstract
No abstract record available.
Inventors
- 👤 Frank W Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:58
CPC Classifications
H; H03; H03M; H03M1/00; G; G09; G09F; G09F11/00; G09F11/24; G09F11/29; G09F11/295
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) | 1904-12-02 | 1905-06-03 | 1905-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-12-02 | 1909-06-03 | 1909-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-12-02 | 1913-06-03 | 1913-12-03 | $7700.00 | Window Closed / Lapsed |