US3620004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time indicating device of direct read-off type
Assignee: Bunker Ramo Corp
•
Filing: 1969-09-25
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Granted: 1971-11-16
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Expires: 1989-09-25
Abstract
Abstract DEVICE USING FILM WITH SUCESSIVE FRAMES BEARING DIFFERENT INDICIA, AND HAVING MEANS FOR STEP-BY-STEP ADVANCEMENT OF THE FILM IS SYNCHRONISM WITH THE PASSAGE OF TIME, WITH SUCESSIVE FRAMES PAUSING IN REGISTER WITH A FILM GATE FOR IMAGE PROJECTION OF THEIR INDICIA ONTO A SCREEN, AND THE DEVICE HAVING FURTHER PROVISION FOR MANUALLY CONTROLLED RAPID ADVANCE OR RETRACTION OF THE FILM.
Inventors
- 👤 Frank H Marz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:01
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |