Patent US3143920A successfully refreshed from Google Patents.
US3143920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motion picture viewer
Assignee: Individual
•
Filing: 1958-04-07
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Granted: 1964-08-11
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Expires: 1978-04-07
Abstract
No abstract record available.
Inventors
- 👤 Jerry D Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:11
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/12; G03B35/00; G03B35/18; G03B35/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PORTABLE MOTION PICTURE VIEWER COMPRISING A CARRYING CASE HAVING A PROJECTION SCREEN, IN ITS FRONT WALL, REEL HOLDING AND PROJECTING MECHANISM ADJACENT A SIDE WALL OF THE CASE AND PROJECTING A BEAM ALONG AN AXIS EXTENDING SUBSTANTIALLY PARALLEL TO THE SIDE WALL AND ADJACENT THE SAME, A MIRROR TOWARD THE FRONT OF THE CASE AND REFLECTING THE SAID BEAM ACROSS THE SAID CASE TO ITS OPPOSITE SIDE WALL, A MIRROR ALSO TOWARD THE FRONT OF THE CASE AND ADJACENT THE SAID OPPOSITE SIDE WALL REFLECTING THE BEAM REARWARDLY OF THE CASE, AND A THIRD MIRROR TOWARD THE REAR OF THE CASE AGAIN REFLECTING THE SAID BEAM ONTO THE PROJECTION SCREEN.
Claim 2
Dependent Claim
111 words
A PORTABLE MOTION PICTURE VIEWER COMPRISING A CARRYING CASE HAVING A PROJECTION SCREEN, IN ITS FRONT WALL, REEL HOLDING AND PROJECTING MECHANISM ADJACENT A SIDE WALL OF THE CASE AND PROJECTING A BEAM ALONG AN AXIS EXTENDING SUBSTANTIALLY PARALLEL TO THE SIDE WALL AND ADJACENT THE SAME, A MIRROR TOWARD THE FRONT OF THE CASE AND REFLECTING THE SAID BEAM ACROSS THE SAID CASE TO ITS OPPOSITE SIDE WALL, A MIRROR ALSO TOWARD THE FRONT OF THE CASE AND ADJACENT THE SAID OPPOSITE SIDE WALL REFLECTING THE BEAM REARWARDLY OF THE CASE, AND A THIRD MIRROR TOWARD THE REAR OF THE CASE AGAIN REFLECTING THE SAID BEAM ONTO THE PROJECTION SCREEN.
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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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |