Patent US4408876A successfully refreshed from Google Patents.
US4408876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for microfilming documents of varied length
Assignee: MOTION TECHNOLOGY Corp A CORP OF
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Filing: 1981-11-27
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Granted: 1983-10-11
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Expires: 2001-11-27
Abstract
Abstract The invention concerns a process for "flow microfilming", particularly using 16mm film, where the film starts being fed synchronously with the feeding of a document to be filmed, moves forward in synchronism with the document and stops after the microfilming of the document is over. According to the invention, the stopping of the film after the document has been microfilmed is done such that the length of the film utilized each time for a given document is equal to a whole multiple of a standard minimum length, whereby the film may be automatically indexed for viewing regardless of the actual length of any given document.
Inventors
- 👤 Kurt A. Steidle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:54
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/46; G03B27/465
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
Apparatus for photographing documents onto microfilm comprising means for advancing the document to be microfilmed, means for advancing the microfilm, synchronization means for control of the movement of the film and document, whereby said film advancement is begun with introduction of the document, means for producing a signal at the termination of the document, means to measure the length of the moved forward film and means for control of the advancement of the film after the production of said signal, such that the film is advanced in lengths corresponding to whole multiples of a pre-established minimum length.
Claim 2
Dependent Claim
97 words
Apparatus for photographing documents onto microfilm comprising means for advancing the document to be microfilmed, means for advancing the microfilm, synchronization means for control of the movement of the film and document, whereby said film advancement is begun with introduction of the document, means for producing a signal at the termination of the document, means to measure the length of the moved forward film and means for control of the advancement of the film after the production of said signal, such that the film is advanced in lengths corresponding to whole multiples of a pre-established minimum length.
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) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |