Patent US3081560A successfully refreshed from Google Patents.
US3081560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Didactical apparatus for teaching languages
Assignee: Individual
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Filing: 1960-11-17
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Granted: 1963-03-19
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Expires: 1980-11-17
Abstract
No abstract record available.
Inventors
- 👤 Agud Joaquin Campo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:10
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A DEVICE FOR TEACHING LANGUAGES COMPRISING A FRAME, DIVIDING MEANS ON SAID FRAME ARRANGED TO FORM A PLURALITY OF HORIZONTALLY DISPOSED CHANNELS, A SERIES OF RECTANGULAR CARDS EACH DIVIDED HORIZONTALLY INTO AT LEAST TWO VERTICALLY SPACED ZONES, ONE ZONE BEARING AT LEAST ONE WORD IN ONE LANGUAGE AND ANOTHER ZONE BEARING THE TRANSLATION THEREOF IN A SECOND LANGUAGE, SAID CARDS BEING SLIDABLY RECEIVABLE IN SAID CHANNELS TO DISPLAY WORDS, PHRASES AND SENTENCES, A HORIZONTALLY DISPOSED COVER MEMBER PROVIDED BETWEEN EACH ADJACENT PAIR OF SAID CHANNELS, AND SAID COVER MEMBER BEING MOVABLE FROM A FIRST POSITION IN WHICH THE TWO ZONES OF EACH CARD IN BOTH CHANNELS OF A PAIR ARE OPEN TO VIEW TO A SECOND POSITION WHEREIN ONE ZONE OF EACH CARD MOUNTED IN ONE OF SAID PAIR OF CHANNELS IS COVERED AND TO A THIRD POSITION IN WHICH THE OTHER ZONE OF EACH CARD IN THE SECOND OF SAID PAIR OF CHANNELS IS COVERED AND HIDDEN FROM VIEW.
Claim 2
Independent Claim
160 words
A DEVICE FOR TEACHING LANGUAGES COMPRISING A FRAME, DIVIDING MEANS ON SAID FRAME ARRANGED TO FORM A PLURALITY OF HORIZONTALLY DISPOSED CHANNELS, A SERIES OF RECTANGULAR CARDS EACH DIVIDED HORIZONTALLY INTO AT LEAST TWO VERTICALLY SPACED ZONES, ONE ZONE BEARING AT LEAST ONE WORD IN ONE LANGUAGE AND ANOTHER ZONE BEARING THE TRANSLATION THEREOF IN A SECOND LANGUAGE, SAID CARDS BEING SLIDABLY RECEIVABLE IN SAID CHANNELS TO DISPLAY WORDS, PHRASES AND SENTENCES, A HORIZONTALLY DISPOSED COVER MEMBER PROVIDED BETWEEN EACH ADJACENT PAIR OF SAID CHANNELS, AND SAID COVER MEMBER BEING MOVABLE FROM A FIRST POSITION IN WHICH THE TWO ZONES OF EACH CARD IN BOTH CHANNELS OF A PAIR ARE OPEN TO VIEW TO A SECOND POSITION WHEREIN ONE ZONE OF EACH CARD MOUNTED IN ONE OF SAID PAIR OF CHANNELS IS COVERED AND TO A THIRD POSITION IN WHICH THE OTHER ZONE OF EACH CARD IN THE SECOND OF SAID PAIR OF CHANNELS IS COVERED AND HIDDEN FROM VIEW.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |