US3353435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for teaching the operation of a keyboard-controlled machine or instrument
Assignee: Individual
•
Filing: 1964-04-24
•
Granted: 1967-11-21
•
Expires: 1984-04-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Schmoyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:14
CPC Classifications
G; G09; G09B; G09B15/00; G09B15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A MULTI-LAYER FRONT PANEL STRUCTURE FOR A LAMP BOX HOUSING TWO SPACED ROWS OF LAMPS, SAID PANEL INCLUDING A SHEET OF LIGHT-TRANSMITTING MATERIAL ADAPTED TO OVERLIE ONLY THAT PART OF THE LAMP BOX OCCUPIED BY ONE OF SAID ROWS OF LAMPS, A SECOND SHEET OF LIGH-TRANSMITTING MATERIAL ADAPTED TO OVERLIE SAID FIRST-MENTIONED SHEET AND DIMENSIONED TO COVER THE PORTION OF THE LAMP BOX OCCUPIED BY BOTH ROWS OF LAMPS, SAID SECOND SHEET BEING OF CONTRASTING COLOR, A THIRD PANEL SHEET COEXTENSIVE WITH SAID SECOND SHEET AND HAVING INDICIA ON ITS EXPOSED FACE, SAID INDICIA INCLUDING A ROW OF LIGHT-TRANSMITTING AREAS ADAPTED TO OVERLIE AND TO BE RESPECTIVELY ALIGNED WITH SAID FIRST ROW OF LAMPS IN SAID LAMP BOX, AND A SECOND ROW OF LIGHT-TRANSMITTING AREAS ADAPTED TO BE ALIGNED WITH SAID SECOND ROW OF LAMPS.
Claim 2
Dependent Claim
135 words
A MULTI-LAYER FRONT PANEL STRUCTURE FOR A LAMP BOX HOUSING TWO SPACED ROWS OF LAMPS, SAID PANEL INCLUDING A SHEET OF LIGHT-TRANSMITTING MATERIAL ADAPTED TO OVERLIE ONLY THAT PART OF THE LAMP BOX OCCUPIED BY ONE OF SAID ROWS OF LAMPS, A SECOND SHEET OF LIGH-TRANSMITTING MATERIAL ADAPTED TO OVERLIE SAID FIRST-MENTIONED SHEET AND DIMENSIONED TO COVER THE PORTION OF THE LAMP BOX OCCUPIED BY BOTH ROWS OF LAMPS, SAID SECOND SHEET BEING OF CONTRASTING COLOR, A THIRD PANEL SHEET COEXTENSIVE WITH SAID SECOND SHEET AND HAVING INDICIA ON ITS EXPOSED FACE, SAID INDICIA INCLUDING A ROW OF LIGHT-TRANSMITTING AREAS ADAPTED TO OVERLIE AND TO BE RESPECTIVELY ALIGNED WITH SAID FIRST ROW OF LAMPS IN SAID LAMP BOX, AND A SECOND ROW OF LIGHT-TRANSMITTING AREAS ADAPTED TO BE ALIGNED WITH SAID SECOND ROW OF LAMPS.
References Cited (Backward Citations)
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US1696901A
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US2223009A
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US2412061A
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US3155000A
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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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |