Patent US1538905A successfully refreshed from Google Patents.
US2229920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard operated radio apparatus
Assignee: SEEBURG RADIO Corp
•
Filing: 1937-10-04
•
Granted: 1941-01-28
•
Expires: 1957-10-04
Abstract
No abstract record available.
Inventors
- 👤 Andrew A Gedde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:20
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/15; D06M15/155; D06M11/00; D06M11/32; D06M11/36; D06M11/38; D06M11/45; D06M11/80; D06M11/82; D06P; D06P1/00; D06P1/44; D06P1/46; D06P1/673; D06P1/67333; D06P1/67341; H; H03; H03J; H03J5/00; H03J5/24; H03J5/26; H03J5/32
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) | 1944-01-28 | 1944-07-29 | 1945-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-01-28 | 1948-07-29 | 1949-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-01-28 | 1952-07-29 | 1953-01-28 | $7700.00 | Window Closed / Lapsed |