Patent US7164784B2 successfully refreshed from Google Patents.
US974985A
Expired / Lapsed
US
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Receiving apparatus.
Assignee: INTERNATIONAL TELEGRAPH CONSTRUCTION Co
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Filing: 1909-02-25
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Granted: 1910-11-08
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Expires: 1929-02-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Midgley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:37
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34; H03F1/36; H03H; H03H2/00; H03H2/005; H03H2/008
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) | 1913-11-07 | 1914-05-09 | 1914-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-11-07 | 1918-05-09 | 1918-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-11-07 | 1922-05-09 | 1922-11-08 | $7700.00 | Window Closed / Lapsed |