US3150841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous motion picture film projection apparatus
Assignee: Stevens Merkle Inc
•
Filing: 1960-10-27
•
Granted: 1964-09-29
•
Expires: 1980-10-27
Abstract
No abstract record available.
Inventors
- 👤 Richard L Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:54
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A CONTINUOUS FILM ADVANCING DEVICE, COMPRISING: A POWER-DRIVEN ROLLER; A PLURALITY OF BELT-SUPPORT ROLLERS; AN ENDLESS FILM-ADVANCING BELT ON SAID SUPPORT ROLLERS AND ENGAGING SAID POWER-DRIVEN ROLLER; A FILM SUPPORTED ON SAID BELT TO BE MOVED THEREBY; AND A CLUTCH SENSITIVE TO THE TENSION OF SAID FILM FOR ENGAGING SAID BELT AND URGING SAID BELT AGAINST SAID POWER-DRIVEN ROLLER WITH A FORCE PROPOR-
Claim 2
Dependent Claim
63 words
A CONTINUOUS FILM ADVANCING DEVICE, COMPRISING: A POWER-DRIVEN ROLLER; A PLURALITY OF BELT-SUPPORT ROLLERS; AN ENDLESS FILM-ADVANCING BELT ON SAID SUPPORT ROLLERS AND ENGAGING SAID POWER-DRIVEN ROLLER; A FILM SUPPORTED ON SAID BELT TO BE MOVED THEREBY; AND A CLUTCH SENSITIVE TO THE TENSION OF SAID FILM FOR ENGAGING SAID BELT AND URGING SAID BELT AGAINST SAID POWER-DRIVEN ROLLER WITH A FORCE PROPOR-
References Cited (Backward Citations)
US1137912A
Cited
US2031079A
Cited
US2094922A
Cited
US2240323A
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US2288983A
Cited
US2443248A
Cited
US2670907A
Cited
US2575579A
Cited
US2778636A
Cited
US2880993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |