US3069667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer apparatus
Assignee: International Business Machines Corp
•
Filing: 1958-11-26
•
Granted: 1962-12-18
•
Expires: 1978-11-26
Abstract
No abstract record available.
Inventors
- 👤 Gerald E Doody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/10; G11B5/48; G11B5/54; G11B5/58; G11B5/60; G11B5/6005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |