US2869877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Play-back sound reproducer
Assignee: ORTHO SONIC INSTR Inc
•
Filing: 1956-04-06
•
Granted: 1959-01-20
•
Expires: 1976-04-06
Abstract
No abstract record available.
Inventors
- 👤 George L Bard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:45
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/34; G11B3/38; G11B3/08; G11B3/095
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1291515A
Cited
US2413206A
Cited
US2532293A
Cited
US2566091A
Cited
US2694615A
Cited
US2776144A
Cited
US2721109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |