US3342101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graphic projector
Assignee: Individual
•
Filing: 1965-03-26
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Granted: 1967-09-19
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Expires: 1985-03-26
Abstract
No abstract record available.
Inventors
- 👤 Fred A Zollner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:18
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/132; Y; Y10; Y10S; Y10S353/00; Y10S353/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN OVERHEAD PROJECTOR INCLUDING A LIGHT BOX, AND A LIGHT DIFFUSING MEMBER AND DRAWING SURFACE POSITIONED OVER THE TOP OF THE LIGHT BOX, A PROJECTING HEAD POSITIONED OVER THE DRAWING SURFACE FOR RECEIVING LIGHT THEREFROM AND PROJECTING IMAGES RECEIVED FROM THE DRAWING SURFACE AND MEANS SUPPORTING THE PROJECTING HEAD FROM THE LIGHT BOX AND DRAWING AID STRUCTURE INCLUDING A SINGLE UNITARY RECTANGULAR FRAME REMOVABLY SECURED OVER THE TOP OF THE LIGHT BOX AND OUTLINING THE COMPLETE DRAWING SURFACE, A STRAIGHT EDGE POSITIONED OVER THE FRAME FOR MOVEMENT BETWEEN THE ENDS THEREOF AND MEANS FOR SECURING THE STRAIGHT EDGE TO THE FRAME FOR RESTRICTING MOVEMENT OF THE STRAIGHT EDGE TO RELATIVELY PARALLEL POSITIONS.
Claim 2
Dependent Claim
112 words
AN OVERHEAD PROJECTOR INCLUDING A LIGHT BOX, AND A LIGHT DIFFUSING MEMBER AND DRAWING SURFACE POSITIONED OVER THE TOP OF THE LIGHT BOX, A PROJECTING HEAD POSITIONED OVER THE DRAWING SURFACE FOR RECEIVING LIGHT THEREFROM AND PROJECTING IMAGES RECEIVED FROM THE DRAWING SURFACE AND MEANS SUPPORTING THE PROJECTING HEAD FROM THE LIGHT BOX AND DRAWING AID STRUCTURE INCLUDING A SINGLE UNITARY RECTANGULAR FRAME REMOVABLY SECURED OVER THE TOP OF THE LIGHT BOX AND OUTLINING THE COMPLETE DRAWING SURFACE, A STRAIGHT EDGE POSITIONED OVER THE FRAME FOR MOVEMENT BETWEEN THE ENDS THEREOF AND MEANS FOR SECURING THE STRAIGHT EDGE TO THE FRAME FOR RESTRICTING MOVEMENT OF THE STRAIGHT EDGE TO RELATIVELY PARALLEL POSITIONS.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |