US3402694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card-holding indicating device
Assignee: Individual
•
Filing: 1965-04-14
•
Granted: 1968-09-24
•
Expires: 1985-04-14
Abstract
No abstract record available.
Inventors
- 👤 Marvin O Christman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:50
CPC Classifications
G; G09; G09B; G09B3/00; G09B3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA745923A
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US1023586A
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US1268613A
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US1699006A
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US2322324A
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US2477134A
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US2491257A
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US2593348A
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US2649790A
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US2674458A
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US2647328A
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US2704048A
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US2787068A
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US3014727A
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US3224112A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |