US3495221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data detector
Assignee: Friden Inc
•
Filing: 1967-11-13
•
Granted: 1970-02-10
•
Expires: 1987-11-13
Abstract
No abstract record available.
Inventors
- 👤 Carl E Herendeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:45
CPC Classifications
G; G06; G06F; G06F3/00; G06F11/00; G06F11/30; G06F11/32; G06F11/324; G06F11/325; G06F3/01; G06F3/02; G06F3/0227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3045211A
Cited
US3156815A
Cited
US3248703A
Cited
US3324458A
Cited
US3375498A
Cited
US3372381A
Cited
US3380031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |