US676332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for wireless telegraphy.
Assignee: Marconis Wireless Telegraph Co Ltd
•
Filing: 1901-02-23
•
Granted: 1901-06-11
•
Expires: 1921-02-23
Abstract
No abstract record available.
Inventors
- 👤 Guglielmo Marconi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:47
CPC Classifications
H; H03; H03B; H03B11/00; H03B11/02
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) | 1904-06-10 | 1904-12-10 | 1905-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-06-10 | 1908-12-10 | 1909-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-06-10 | 1912-12-10 | 1913-06-11 | $7700.00 | Window Closed / Lapsed |