US2937028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic belt for sound recording and reproducing
Assignee: DU KANE CORP
•
Filing: 1954-06-17
•
Granted: 1960-05-17
•
Expires: 1974-06-17
Abstract
No abstract record available.
Inventors
- 👤 Michael C Supitilov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:00
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/004; G11B5/62; G11B5/68; G11B5/70; G11B5/702; G11B5/73; G11B5/739; G11B5/73923; Y; Y10; Y10S; Y10S425/00; Y10S425/033
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2566441A
Cited
US2536029A
Cited
US2525601A
Cited
US2581765A
Cited
FR966682A
Cited
US2674547A
Cited
FR1053854A
Cited
US2712987A
Cited
US2686137A
Cited
US2796359A
Cited
US2721906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |