US1564627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wireless telegraph and telephone transmission
Assignee: RCA Corp
•
Filing: 1920-03-31
•
Granted: 1925-12-08
•
Expires: 1940-03-31
Abstract
No abstract record available.
Inventors
- 👤 Round Henry Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:27
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/08; H03B5/10
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) | 1928-12-07 | 1929-06-08 | 1929-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-12-07 | 1933-06-08 | 1933-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-12-07 | 1937-06-08 | 1937-12-08 | $7700.00 | Window Closed / Lapsed |