US2867439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound reading device for kinematographic projectors
Assignee: Heurtier et Cie SA
•
Filing: 1954-10-29
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Granted: 1959-01-06
•
Expires: 1974-10-29
Abstract
No abstract record available.
Inventors
- 👤 Heurtier Antoine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:12
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/34; G11B5/00; G11B5/48
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |