US3086296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device to aid drawing of true perspective views
Assignee: Individual
•
Filing: 1962-01-05
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Granted: 1963-04-23
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Expires: 1982-01-05
Abstract
No abstract record available.
Inventors
- 👤 Eric V Bergstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:17
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/14; B43L13/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
APPARATUS FOR FACILITATING DRAWING OF TRUE PERSPECTIVE VIEWS COMPRISING A VIEWING ELEMENT AND ADJUSTABLE SUPPORT MEANS THEREFOR, SAID VIEWING ELEMENT COMPRISING A FRAME HAVING AN OPENING THEREIN AND TWO SETS OF MUTUALLY PERPENDICULAR STRANDS SECURED AT THEIR ENDS TO THE FRAME AND SPANNING THE OPENING THEREIN, SAID ADJUSTABLE SUPPORT MEANS COMPRISING AN ELONGATED MEMBER OF NON RESILIENT BENDABLE MATERIAL OF A STRENGTH SUFFICIENT IN ANY CONFIGURATION TO SUPPORT SAID FRAME, SAID ELONGATED MEMBER HAVING A CLIP SECURED TO ONE END THEREOF FOR DETACHABLY MOUNTING THE FRAME THEREON AND HAVING MEANS SECURED TO THE OTHER END FOR DETACHABLY MOUNTING THE MEMBER ON ANY STATIONARY OBJECT.
Claim 2
Dependent Claim
104 words
APPARATUS FOR FACILITATING DRAWING OF TRUE PERSPECTIVE VIEWS COMPRISING A VIEWING ELEMENT AND ADJUSTABLE SUPPORT MEANS THEREFOR, SAID VIEWING ELEMENT COMPRISING A FRAME HAVING AN OPENING THEREIN AND TWO SETS OF MUTUALLY PERPENDICULAR STRANDS SECURED AT THEIR ENDS TO THE FRAME AND SPANNING THE OPENING THEREIN, SAID ADJUSTABLE SUPPORT MEANS COMPRISING AN ELONGATED MEMBER OF NON RESILIENT BENDABLE MATERIAL OF A STRENGTH SUFFICIENT IN ANY CONFIGURATION TO SUPPORT SAID FRAME, SAID ELONGATED MEMBER HAVING A CLIP SECURED TO ONE END THEREOF FOR DETACHABLY MOUNTING THE FRAME THEREON AND HAVING MEANS SECURED TO THE OTHER END FOR DETACHABLY MOUNTING THE MEMBER ON ANY STATIONARY OBJECT.
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |