Patent US716334A successfully refreshed from Google Patents.
US716334A
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Method of communicating signals through space.
Assignee: WIRELESS TELEGRAPH Co OF AMERICA
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Filing: 1902-08-04
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Granted: 1902-12-16
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Expires: 1922-08-04
Abstract
No abstract record available.
Inventors
- 👤 Lee De Forest
- 👤 Edwin H Smythe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:51
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/08
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) | 1905-12-15 | 1906-06-16 | 1906-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-12-15 | 1910-06-16 | 1910-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-12-15 | 1914-06-16 | 1914-12-16 | $7700.00 | Window Closed / Lapsed |