Patent US1001069A successfully refreshed from Google Patents.
Patent US1694646A successfully refreshed from Google Patents.
US1694646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wireless telegraph receiver
Assignee: RCA Corp
•
Filing: 1919-06-25
•
Granted: 1928-12-11
•
Expires: 1939-06-25
Abstract
No abstract record available.
Inventors
- 👤 Franklin Charles Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:39
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/08; H03D1/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1931-12-11 | 1932-06-11 | 1932-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-12-11 | 1936-06-11 | 1936-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-12-11 | 1940-06-11 | 1940-12-11 | $7700.00 | Window Closed / Lapsed |