Patent US3337962A successfully refreshed from Google Patents.
US3337962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical aid for isometric drawing
Assignee: Individual
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Filing: 1966-05-31
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Granted: 1967-08-29
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Expires: 1986-05-31
Abstract
No abstract record available.
Inventors
- 👤 Mcguire J Rees
- 👤 Robert D Mcguire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:35
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A MECHANICAL AID FOR ISOMETRIC DRAWING, COMPRISING, IN COMBINATION, A BASE PLATE, A PAIR OF PRIMARY BASE RETAINERS, A MOVEABLE, RECTANGULAR, PRIMARY BASE RESLIDE WITHIN EACH OF SAID PRIMARY RETAINERS, SAID RETAINERS BEING SECURED ON SAID BASE AT 60 DEGREES TO EACH OTHER, SAID SLIDES BEING SLIDABLE IN DIRECTIONS 60 DEGREES TO EACH OTHER, EACH SAID PRIMARY SLIDE BEING PROVIDED WITH A FIRST AND SECOND OPAQUE LINE IN PARALLEL, SPACED RELATION FROM EACH OTHER, AND POSITIONED 90 DEGREES TO SAID SLIDING DIRECTION OF SAID SLIDE, A SECONDARY RETAINER SECURED TO SAID BASE, A SECONDARY TRANSPARENT, RECTANGULAR, SLIDE ADAPTED TO MOVE WITHIN SAID SECONDARY RETAINER, A SINGULAR OPAQUE LINE POSITIONED ON SAID SLIDE OF SAID SECONDARY RETAINER, SAID SINGULAR OPAQUE LINE BEING POSITIONED AT AN ANGLE OF 60 DEGREES RESPECTIVE TO A SLIDING DIRECTION OF SAID SECONDARY SLIDE, SAID SECONDARY SLIDE MOVING IN A DIRECTION THAT BISECTS SAID 60-DEGREE ANGLE BETWEEN SAID PRIMARY SLIDES, ALL THREE SAID SLIDES BEING OF A LENGTH TO OVERLAP
Claim 2
Dependent Claim
163 words
A MECHANICAL AID FOR ISOMETRIC DRAWING, COMPRISING, IN COMBINATION, A BASE PLATE, A PAIR OF PRIMARY BASE RETAINERS, A MOVEABLE, RECTANGULAR, PRIMARY BASE RESLIDE WITHIN EACH OF SAID PRIMARY RETAINERS, SAID RETAINERS BEING SECURED ON SAID BASE AT 60 DEGREES TO EACH OTHER, SAID SLIDES BEING SLIDABLE IN DIRECTIONS 60 DEGREES TO EACH OTHER, EACH SAID PRIMARY SLIDE BEING PROVIDED WITH A FIRST AND SECOND OPAQUE LINE IN PARALLEL, SPACED RELATION FROM EACH OTHER, AND POSITIONED 90 DEGREES TO SAID SLIDING DIRECTION OF SAID SLIDE, A SECONDARY RETAINER SECURED TO SAID BASE, A SECONDARY TRANSPARENT, RECTANGULAR, SLIDE ADAPTED TO MOVE WITHIN SAID SECONDARY RETAINER, A SINGULAR OPAQUE LINE POSITIONED ON SAID SLIDE OF SAID SECONDARY RETAINER, SAID SINGULAR OPAQUE LINE BEING POSITIONED AT AN ANGLE OF 60 DEGREES RESPECTIVE TO A SLIDING DIRECTION OF SAID SECONDARY SLIDE, SAID SECONDARY SLIDE MOVING IN A DIRECTION THAT BISECTS SAID 60-DEGREE ANGLE BETWEEN SAID PRIMARY SLIDES, ALL THREE SAID SLIDES BEING OF A LENGTH TO OVERLAP
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |