US3229075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reading device
Assignee: Yissum Research Development Co of Hebrew University of Jerusalem
•
Filing: 1962-03-14
•
Granted: 1966-01-11
•
Expires: 1982-03-14
Abstract
No abstract record available.
Inventors
- 👤 Palti Yoram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:17
CPC Classifications
G; G09; G09B; G09B21/00; G09B21/001; G09B21/006; Y; Y10; Y10S; Y10S385/00; Y10S385/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A READING DEVICE COMPRISING A CASING, A SOURCE OF LIGHT DISPOSED WITHIN SAID CASING AND ADAPTED TO PROJECT A BEAM OF LIGHT FROM ONE END THEREOF UPON A LINE OF PRINT, MEANS WITHIN SAID CASING ADAPTED TO RECEIVE LIGHT REFLECTED FROM SAID LINE OF PRINT, AND A SCREEN POSITIONED BETWEEN THE LIGHT SOURCE AND SAID LINE OF PRINT, SAID SCREEN HAVING AT LEAST ONE OPENING NARROW IN WIDTH IN THE DIRECTION OF EXTENSION OF THE LINE OF PRINT AND ELONGATED IN LENGTH NORMAL TO THE DIRECTION OF EXTENSION OF THE LINE OF PRINT,
Claim 2
Dependent Claim
93 words
A READING DEVICE COMPRISING A CASING, A SOURCE OF LIGHT DISPOSED WITHIN SAID CASING AND ADAPTED TO PROJECT A BEAM OF LIGHT FROM ONE END THEREOF UPON A LINE OF PRINT, MEANS WITHIN SAID CASING ADAPTED TO RECEIVE LIGHT REFLECTED FROM SAID LINE OF PRINT, AND A SCREEN POSITIONED BETWEEN THE LIGHT SOURCE AND SAID LINE OF PRINT, SAID SCREEN HAVING AT LEAST ONE OPENING NARROW IN WIDTH IN THE DIRECTION OF EXTENSION OF THE LINE OF PRINT AND ELONGATED IN LENGTH NORMAL TO THE DIRECTION OF EXTENSION OF THE LINE OF PRINT,
References Cited (Backward Citations)
US2420716A
Cited
US2986697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |