US3540739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph record changer
Assignee: Panasonic Holdings Corp
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Filing: 1968-01-29
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Granted: 1970-11-17
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Expires: 1988-01-29
Abstract
No abstract record available.
Inventors
- 👤 Yasutaka Nakajima
- 👤 Isao Kozu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:15
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/08; G11B17/12; G11B17/16; G11B17/162; G11B17/165; G11B3/00; G11B3/02; G11B3/08; G11B3/085; G11B3/08503; G11B3/08519; G11B3/08522; G11B3/08535; G11B3/08564; G11B3/08587; G11B3/0859; G11B3/10; G11B3/34; G11B3/36
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) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |