US3336836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide projector
Assignee: Bell and Howell Co
•
Filing: 1964-06-23
•
Granted: 1967-08-22
•
Expires: 1984-06-23
Abstract
No abstract record available.
Inventors
- 👤 Irwin M Gould
- 👤 Gerald A Moe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:50
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; G03B23/044; G03B21/00; G03B21/001; G03B23/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A SLIDE PROJECTOR INCLUDING, MEANS FOR RECEIVING SLIDES TO BE PROJECTED, MEANS FOR PROJECTING SLIDES ONTO A SCREEN, MEANS FOR PREVIEWING THE SLIDES, AND MEANS WITHIN THE PROJECTOR FOR CONTROLLING TRANSPORT OF THE SLIDES FROM SAID RECEIVING MEANS TO SAID PREVIEWING MEANS AND TO SAID PROJECTION MEANS.
Claim 2
Dependent Claim
47 words
A SLIDE PROJECTOR INCLUDING, MEANS FOR RECEIVING SLIDES TO BE PROJECTED, MEANS FOR PROJECTING SLIDES ONTO A SCREEN, MEANS FOR PREVIEWING THE SLIDES, AND MEANS WITHIN THE PROJECTOR FOR CONTROLLING TRANSPORT OF THE SLIDES FROM SAID RECEIVING MEANS TO SAID PREVIEWING MEANS AND TO SAID PROJECTION MEANS.
References Cited (Backward Citations)
US2746345A
Cited
US2969711A
Cited
US3002426A
Cited
US3079840A
Cited
US3173331A
Cited
US3143037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |