US3469774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coder for edge notched cards and the like
Assignee: O K Partnership
•
Filing: 1966-04-04
•
Granted: 1969-09-30
•
Expires: 1986-04-04
Abstract
No abstract record available.
Inventors
- 👤 Robert J Kalthoff
- 👤 Frederic R G Sanborn
- 👤 Robert D Parry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:13
CPC Classifications
G; G06; G06K; G06K21/00; G06K21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2041085A
Cited
US2261710A
Cited
US2294371A
Cited
US2585720A
Cited
US2704578A
Cited
US2762434A
Cited
US3006537A
Cited
US3231186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |