US3456997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for eliminating image distortions
Assignee: GTE Sylvania Inc
•
Filing: 1967-07-20
•
Granted: 1969-07-22
•
Expires: 1987-07-20
Abstract
No abstract record available.
Inventors
- 👤 Francis H Stites
- 👤 Franklin L Feigin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:53
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/12; B; B61; B61L; B61L25/00; B61L25/02; B61L25/04; B61L25/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2059221A
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US2853918A
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US3109933A
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US3225177A
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US3308275A
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US3175459A
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US3154371A
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US3243776A
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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) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |