Patent US3297397A successfully refreshed from Google Patents.
US3297397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined footage counter and end of film run indicator mechanism for motion picture camera
Assignee: Bell and Howell Co
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Filing: 1964-10-02
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Granted: 1967-01-10
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Expires: 1984-10-02
Abstract
No abstract record available.
Inventors
- 👤 Peter H Grant
- 👤 Arthur C Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:11
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
AN INDICATOR MECHANISM FOR USE IN A MOTION PICTURE CAMERA HAVING A HOUSING, A VIEW-FINDER ASSOCIATED THEREWITH, AND A DRIVE MOTOR IN THE HOUSING, COMPRISING: GUIDE MEANS IN OPERABLE CONNECTION WITH SAID DRIVE MOTOR; AN ELONGATED GUIDE PATH AT LEAST PARTIALLY FORMED AS A SUBSTANTIALLY UNIFORMLY SPACE SPIRAL ON SAID GUIDE MEANS AND TERMINATING IN A CONTROL PORTION; GUIDE ENGAGING MEANS TO ENGAGE SAID PATH SO AS TO BE MOVED AS SAID GUIDE MEANS IS MOVED; AND MEANS TO INDICATE WHEN SAID GUIDE ENGAGING MEANS IS MOVED ALONG SAID PATH AND INTO SAID CONTROL PORTION, A PART OF SAID LAST NAMED MEANS BEING VISIBLE IN SAID VIEWFINDER WHEN SAID GUIDE ENGAGING MEANS IS IN SAID CONTROL PORTION.
Claim 2
Dependent Claim
117 words
AN INDICATOR MECHANISM FOR USE IN A MOTION PICTURE CAMERA HAVING A HOUSING, A VIEW-FINDER ASSOCIATED THEREWITH, AND A DRIVE MOTOR IN THE HOUSING, COMPRISING: GUIDE MEANS IN OPERABLE CONNECTION WITH SAID DRIVE MOTOR; AN ELONGATED GUIDE PATH AT LEAST PARTIALLY FORMED AS A SUBSTANTIALLY UNIFORMLY SPACE SPIRAL ON SAID GUIDE MEANS AND TERMINATING IN A CONTROL PORTION; GUIDE ENGAGING MEANS TO ENGAGE SAID PATH SO AS TO BE MOVED AS SAID GUIDE MEANS IS MOVED; AND MEANS TO INDICATE WHEN SAID GUIDE ENGAGING MEANS IS MOVED ALONG SAID PATH AND INTO SAID CONTROL PORTION, A PART OF SAID LAST NAMED MEANS BEING VISIBLE IN SAID VIEWFINDER WHEN SAID GUIDE ENGAGING MEANS IS IN SAID CONTROL PORTION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |