Patent US1875104A successfully refreshed from Google Patents.
US3300271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutter mechanism for a motion picture camera
Assignee: Yashica Co Ltd
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Filing: 1964-10-01
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Granted: 1967-01-24
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Expires: 1984-10-01
Abstract
No abstract record available.
Inventors
- 👤 Yamamoto Masaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:27
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A MOTION PICTURE CAMERA SHUTTER MECHANISM COMPRISING A PAIR OF FIRST AND SECOND LONGITUDINALLY ALIGNED SHUTTER BLADES ROTATABLE ABOUT A LONGITUDINAL AXIS, MEANS NORMALLY RESILIENTLY URGING SAID BLADES TO A PREDETERMINED MUTUAL ANGULAR RELATIONSHIP, FIRST AND SECOND ELECTRIC DRIVE MOTORS COUPLED TO SAID FIRST AND SECOND SHUTTER BLADES RE-
Claim 2
Dependent Claim
49 words
A MOTION PICTURE CAMERA SHUTTER MECHANISM COMPRISING A PAIR OF FIRST AND SECOND LONGITUDINALLY ALIGNED SHUTTER BLADES ROTATABLE ABOUT A LONGITUDINAL AXIS, MEANS NORMALLY RESILIENTLY URGING SAID BLADES TO A PREDETERMINED MUTUAL ANGULAR RELATIONSHIP, FIRST AND SECOND ELECTRIC DRIVE MOTORS COUPLED TO SAID FIRST AND SECOND SHUTTER BLADES RE-
References Cited (Backward Citations)
US2166947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |