US1738684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage-limiting arrangement for intermediate-circuit transmitters
Assignee: Telefunken AG
•
Filing: 1924-12-15
•
Granted: 1929-12-10
•
Expires: 1944-12-15
Abstract
No abstract record available.
Inventors
- 👤 Bohm Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:29
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/52; H03F1/54
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) | 1932-12-09 | 1933-06-10 | 1933-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-12-09 | 1937-06-10 | 1937-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-12-09 | 1941-06-10 | 1941-12-10 | $7700.00 | Window Closed / Lapsed |