US3453595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optic to acoustic converter for pattern recognition
Assignee: International Business Machines Corp
•
Filing: 1964-06-30
•
Granted: 1969-07-01
•
Expires: 1984-06-30
Abstract
No abstract record available.
Inventors
- 👤 Euval S Barrekette
- 👤 Charles V Freiman
- 👤 Denos C Gazis
- 👤 John E Lovell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:29
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/10; G06V10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3065378A
Cited
US3035200A
Cited
US3254266A
Cited
US3121824A
Cited
US3132276A
Cited
US3072821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |