US2636742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph record changer
Assignee: Admiral Corp
•
Filing: 1947-09-26
•
Granted: 1953-04-28
•
Expires: 1967-09-26
Abstract
No abstract record available.
Inventors
- 👤 George E Redfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:32
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/2009; G11B17/00; G11B17/08; G11B17/12; G11B17/16; G11B17/162; G11B17/165
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1938810A
Cited
US2062396A
Cited
US2397932A
Cited
US2371361A
Cited
US2309352A
Cited
US2323472A
Cited
US2330293A
Cited
US2331383A
Cited
US2435264A
Cited
US2390862A
Cited
US2426978A
Cited
US2376741A
Cited
CH235600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |