US3085358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Educational aid for teaching the ruler and other subject matter
Assignee: Individual
•
Filing: 1961-05-24
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Granted: 1963-04-16
•
Expires: 1981-05-24
Abstract
No abstract record available.
Inventors
- 👤 John C Hramiec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:08
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
AN EDUCATIONAL AID, COMPRISING A BASE PLATE PROVIDED WITH A PLURALITY OF HOLES THERETHROUGH LOCATED AT PREDETERMINED POSITIONS; A SLIDE MOVABLY MOUNTED ON SAID BASE PLATE AND PROVIDED WITH A PLURALITY OF PREDETERMINED POSITIONED HOLES; AN INDICIA MARKING ON SAID SLIDE BESIDE EACH OF THE HOLES; INDICIA REPRESENTATIVE OF A PLURALITY OF PROBLEMS CARRIED BY SAID BASE PLATE AT SPACED APART POSITIONS THEREON; AN INDICATOR HANDLE ON SAID SLIDE; A PEG FOR SELECTIVE INSERTION INTO THE HOLES IN SAID SLIDE; AND, SAID HOLES BEING POSITIONED IN SAID SLIDE AND BASE PLATE SO THAT WHEN THE SLIDE IS POSITIONED WITH THE INDICATOR HANDLE IN ALIGNMENT WITH ONE OF THE PROBLEMS A PREDETERMINED HOLE IN SAID SLIDE WILL BE ALIGNED WITH ONE OF THE HOLES IN SAID BASE PLATE, AND SAID PEG WILL BE RECEIVED IN THE ALIGNED HOLES.
Claim 2
Dependent Claim
137 words
AN EDUCATIONAL AID, COMPRISING A BASE PLATE PROVIDED WITH A PLURALITY OF HOLES THERETHROUGH LOCATED AT PREDETERMINED POSITIONS; A SLIDE MOVABLY MOUNTED ON SAID BASE PLATE AND PROVIDED WITH A PLURALITY OF PREDETERMINED POSITIONED HOLES; AN INDICIA MARKING ON SAID SLIDE BESIDE EACH OF THE HOLES; INDICIA REPRESENTATIVE OF A PLURALITY OF PROBLEMS CARRIED BY SAID BASE PLATE AT SPACED APART POSITIONS THEREON; AN INDICATOR HANDLE ON SAID SLIDE; A PEG FOR SELECTIVE INSERTION INTO THE HOLES IN SAID SLIDE; AND, SAID HOLES BEING POSITIONED IN SAID SLIDE AND BASE PLATE SO THAT WHEN THE SLIDE IS POSITIONED WITH THE INDICATOR HANDLE IN ALIGNMENT WITH ONE OF THE PROBLEMS A PREDETERMINED HOLE IN SAID SLIDE WILL BE ALIGNED WITH ONE OF THE HOLES IN SAID BASE PLATE, AND SAID PEG WILL BE RECEIVED IN THE ALIGNED HOLES.
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |