US3538499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical reading machine
Assignee: Control Data Corp
•
Filing: 1967-07-07
•
Granted: 1970-11-03
•
Expires: 1987-07-07
Abstract
No abstract record available.
Inventors
- 👤 Jacob Rabinow
- 👤 Leonard F Glaeser Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:30
CPC Classifications
B; B07; B07C; B07C3/00; B07C3/10; B07C3/14; G; G06; G06K; G06K7/00; G06K7/10; G06V; G06V10/00; G06V10/10; G06V10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1366617A
Cited
US2968793A
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US3250172A
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US3235660A
Cited
US3177470A
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US3426324A
Cited
US3412255A
Cited
US3426325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |