Patent US3374559A successfully refreshed from Google Patents.
US3374559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching device
Assignee: Milton Bradley Co
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Filing: 1966-06-28
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Granted: 1968-03-26
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Expires: 1986-06-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Luke J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:12
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A TEACHING DEVICE COMPRISING IN COMBINATION, (A) A FLASHBACK; (B) INDICIA ON THE FLASHCARD PERTAINING TO A SUBJECT WITH THE INDICIA ON THE CARD APPEARING ON BOTH FACES THEREOF AND WITH THE INDICIA ON EACH FACE BEING IDENTICAL IN SUBJECT MATTER. (C) MEANS SLIDABLY RELATED TO THE FLASHCARD FOR CONCEALING CERTAIN OF THE INDICIA THEREON AND CONSISTING OF: (A) A SLIDE MEMBER CUT SCORED TO DEFINE A TAB; (B) THE TAB HAVING A SIGHT OPENING THEREIN; (C) THE TAB BEING ENGAGEABLE WITH AN EDGE OF THE FLASH CARD WITH THE SIGHT OPENING THEREIN BEING REGISTRABLE WITH CERTAIN OF THE INDICIA ON ONE FACE OF THE FLASHCARD; (D) THE SLIDE MEMBER PROPER CONCEALING CERTAIN INDICIA ON THE OTHER FACE OF THE FLASHCARD; AND (E) THE CERTAIN INDICIA ON THE OTHER FACE OF THE FLASHCARD CORRESPONDING TO THE INDICIA ON THE ONE FACE APPEARING THROUGH THE SIGHT OPENING IN THE TAB.
Claim 2
Dependent Claim
149 words
A TEACHING DEVICE COMPRISING IN COMBINATION, (A) A FLASHBACK; (B) INDICIA ON THE FLASHCARD PERTAINING TO A SUBJECT WITH THE INDICIA ON THE CARD APPEARING ON BOTH FACES THEREOF AND WITH THE INDICIA ON EACH FACE BEING IDENTICAL IN SUBJECT MATTER. (C) MEANS SLIDABLY RELATED TO THE FLASHCARD FOR CONCEALING CERTAIN OF THE INDICIA THEREON AND CONSISTING OF: (A) A SLIDE MEMBER CUT SCORED TO DEFINE A TAB; (B) THE TAB HAVING A SIGHT OPENING THEREIN; (C) THE TAB BEING ENGAGEABLE WITH AN EDGE OF THE FLASH CARD WITH THE SIGHT OPENING THEREIN BEING REGISTRABLE WITH CERTAIN OF THE INDICIA ON ONE FACE OF THE FLASHCARD; (D) THE SLIDE MEMBER PROPER CONCEALING CERTAIN INDICIA ON THE OTHER FACE OF THE FLASHCARD; AND (E) THE CERTAIN INDICIA ON THE OTHER FACE OF THE FLASHCARD CORRESPONDING TO THE INDICIA ON THE ONE FACE APPEARING THROUGH THE SIGHT OPENING IN THE TAB.
References Cited (Backward Citations)
US705579A
Cited
US3206872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |