Patent US3388647A successfully refreshed from Google Patents.
US3388647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Objective lens mount
Assignee: Pentax Corp
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Filing: 1966-07-01
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Granted: 1968-06-18
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Expires: 1986-07-01
Abstract
No abstract record available.
Inventors
- 👤 Yajima Kinpei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:55
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/12; G03B17/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PHOTOGRAPHIC CAMERA COMPRISING A CAMERA BODY MEMBER, A COUPLING RING ROTATABLY MOUNTED TO SAID BODY MEMBER AND PROVIDED WITH A PERIPHERAL THREAD, MEANS INHIBITING THE ROTATION OF SAID COUPLING RING AND RELEASABLE AT A PREDETERMINED TORQUE ON SAID COUPLING RING, A LENS BARREL PROVIDED WITH A PERIPHERAL THREAD MATABLY ENGAGEABLE WITH SAID COUPLING RING THREAD, AND RELEASABLY EN-
Claim 2
Dependent Claim
59 words
A PHOTOGRAPHIC CAMERA COMPRISING A CAMERA BODY MEMBER, A COUPLING RING ROTATABLY MOUNTED TO SAID BODY MEMBER AND PROVIDED WITH A PERIPHERAL THREAD, MEANS INHIBITING THE ROTATION OF SAID COUPLING RING AND RELEASABLE AT A PREDETERMINED TORQUE ON SAID COUPLING RING, A LENS BARREL PROVIDED WITH A PERIPHERAL THREAD MATABLY ENGAGEABLE WITH SAID COUPLING RING THREAD, AND RELEASABLY EN-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |