Patent US3444552A successfully refreshed from Google Patents.
US3444552A
Expired / Lapsed
US
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Fused character digital readout device having half of each character common with another character
Assignee: RTX Corp
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Filing: 1965-10-18
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Granted: 1969-05-13
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Expires: 1985-10-18
Abstract
No abstract record available.
Inventors
- 👤 Leon Feigin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:42
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/04; G09G3/045; G09F; G09F11/00; G09F11/23; G09F3/00; G09F3/08; G09F3/18; G09F3/20; G09F3/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2748382A
Cited
US3200396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |