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Patent US3404474A successfully refreshed from Google Patents.
US3404474A
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Assignee: Individual
•
Filing: 1965-06-21
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Granted: 1968-10-08
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Expires: 1985-06-21
Abstract
No abstract record available.
Inventors
- 👤 James F Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:20
CPC Classifications
G; G09; G09F; G09F7/00; G09F7/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1359510A
Cited
US2916607A
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US3032646A
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US3189786A
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US3188761A
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US3161974A
Cited
US3252042A
Cited
US3182415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |