Patent US3215989A successfully refreshed from Google Patents.
US3215989A
Expired / Lapsed
US
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Optical apparatus for coordinate selection
Assignee: AT&T Inc
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Filing: 1963-12-20
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Granted: 1965-11-02
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Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Ketchledge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:46
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G11C13/048
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
WAVE TRANSLATION APPARATUS COMPRISING A TARGET FOR RADIANT WAVE ENERGY, MEANS FOR POLARIZING SAID RADIANT WAVE ENERGY, CYLINDRICALLY CURVED MEANS FOR FOCUSING SAID RADIANT WAVE ENERGY, MEANS FOR MODULATING ADJACENT PORTIONS OF SAID POLARIZED FOCUSED ENERGY DIFFERENTLY, MEANS FOR REPOLARIZING ONE MODULATED PORTION OF SAID ENERGY, CYLINDRICALLY CURVED MEANS FOR REFOCUSING SAID ONE MODULATED PORTION OF SAID ENERGY, MEANS FOR REMODULATING ADJACENT PORTIONS OF SAID REPOLARIZED REFOCUSED ENERGY DIFFERENTLY, AND MEANS FOR TRANSMITTING ONE REMODULATED PORTION OF SAID ENERGY TO SAID TARGET MORE STRONGLY THAN AN ADJACENT ONE OF SAID REMODULATED PORTION.
References Cited (Backward Citations)
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |