US2921736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric reader for punched cards
Assignee: NCR Voyix Corp
•
Filing: 1955-09-06
•
Granted: 1960-01-19
•
Expires: 1975-09-06
Abstract
No abstract record available.
Inventors
- 👤 George A Hatherell
- 👤 Kenneth R Carlisle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:12
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02; G06K13/06; G06K13/08; G06K13/10; G06K13/107; G06K7/00; G06K7/01; G06K7/016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2184229A
Cited
US2819076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |