Patent US3174241A successfully refreshed from Google Patents.
US3174241A
Expired / Lapsed
US
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Portable dictionary on film reading device
Assignee: Individual
•
Filing: 1962-03-26
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Granted: 1965-03-23
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Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 John W Rohan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:55
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/06; G09B19/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB231214A
Cited
US2033926A
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US2045249A
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US2156432A
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US2182084A
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US2195782A
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US2398226A
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US2657487A
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US2687259A
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US2729006A
Cited
US3003271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |