US3435244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pattern recognition apparatus utilizing complex spatial filtering
Assignee: AT&T Inc
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Filing: 1966-05-05
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Granted: 1969-03-25
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Expires: 1986-05-05
Abstract
No abstract record available.
Inventors
- 👤 Christoph B Burckhardt
- 👤 Keith S Pennington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:50
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/42; G02B27/46; G06; G06V; G06V10/00; G06V10/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
APPARATUS FOR RECOGNIZING A SPECIFIC PATTERN ON AN OBJECT COMPRISING: MEANS FOR CAUSING COHERENT LIGHT TO BE PROJECTED FROM THE OBJECT; MEANS FOR TRANSMITTING AND REDISTRIBUTING THE LIGHT SUCH THAT IN AN OUTPUT PLANE THE LIGHT AMPLITUDE VARIES IN THE VERTICAL DIRECTION AS A FUNCTION OF $ AND IN THE HORIZONTAL DIRECTION AS A FUNCTION OF
Claim 2
Dependent Claim
56 words
APPARATUS FOR RECOGNIZING A SPECIFIC PATTERN ON AN OBJECT COMPRISING: MEANS FOR CAUSING COHERENT LIGHT TO BE PROJECTED FROM THE OBJECT; MEANS FOR TRANSMITTING AND REDISTRIBUTING THE LIGHT SUCH THAT IN AN OUTPUT PLANE THE LIGHT AMPLITUDE VARIES IN THE VERTICAL DIRECTION AS A FUNCTION OF $ AND IN THE HORIZONTAL DIRECTION AS A FUNCTION OF
References Cited (Backward Citations)
US3290505A
Cited
US3325594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |