US2883653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive-line curve reader
Assignee: Individual
•
Filing: 1956-06-13
•
Granted: 1959-04-21
•
Expires: 1976-06-13
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Stuart
- 👤 Charles W Benfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:26
CPC Classifications
G; G06; G06K; G06K11/00; G06K11/02; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/12; G05B19/122; G05B2219/00; G05B2219/20; G05B2219/23; G05B2219/23202
Claims Analysis
Total Claims: 0
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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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |