US3194115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual slide projector with a single magazine
Assignee: Realist Inc
•
Filing: 1962-07-26
•
Granted: 1965-07-13
•
Expires: 1982-07-26
Abstract
No abstract record available.
Inventors
- 👤 Harry L Giwosky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:43
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; G03B23/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A SLIDE PROJECTOR COMPRISING, A HOUSING CONTAINING A LIGHT SOURCE EMITTING TWO BEAMS IN OPPOSITE DIRECTIONS A SLIDE STAGE IN EACH BEAM, A MIRROR FOR REFLECTING EACH BEAM TO RESULT IN TWO GENERALLY PARALLEL BEAMS, A SLIDE MAGAZINE CONTAINING THE SLIDES FOR BOTH STAGES AND POSITIONED PARALLEL TO THE OPPOSITELY DIRECTED BEAMS, AND A CHANGER FOR EACH STAGE AND OPERATIVE TO TRANSPORT SLIDES BETWEEN THE MAGAZINE AND STAGE ASSOCIATED THEREWITH.
Claim 2
Dependent Claim
70 words
A SLIDE PROJECTOR COMPRISING, A HOUSING CONTAINING A LIGHT SOURCE EMITTING TWO BEAMS IN OPPOSITE DIRECTIONS A SLIDE STAGE IN EACH BEAM, A MIRROR FOR REFLECTING EACH BEAM TO RESULT IN TWO GENERALLY PARALLEL BEAMS, A SLIDE MAGAZINE CONTAINING THE SLIDES FOR BOTH STAGES AND POSITIONED PARALLEL TO THE OPPOSITELY DIRECTED BEAMS, AND A CHANGER FOR EACH STAGE AND OPERATIVE TO TRANSPORT SLIDES BETWEEN THE MAGAZINE AND STAGE ASSOCIATED THEREWITH.
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |