US3596393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the housing and storage of microfilm
Assignee: Microgen Ltd
•
Filing: 1968-10-31
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Granted: 1971-08-03
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Expires: 1988-10-31
Abstract
Abstract A device for retaining strips of microfilm and comprising a pair of sheets disposed in face-to-face relationship, the sheets being secured together at spaced fastening points whereby strips of microfilm can be inserted between the sheets and located at the fastening points.
Inventors
- 👤 Janice Marilyn Lithgow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/64
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
A device for storing strips of microfilm and comprising a pair of sheets of material disposed in face-to-face relationship, the sheets being secured together at a plurality Of spaced fastening points disposed at regularly spaced intervals over the area of the sheets of material, said points being spaced from each other in the longitudinal and vertical directions thereby to permit insertion of strips of microfilm between the two sheets of material in directions substantially at right angles, each strip of microfilm being located between the sheets by the material extending between the sheets of material at the fastening points.
Claim 2
Independent Claim
99 words
A device for storing strips of microfilm and comprising a pair of sheets of material disposed in face-to-face relationship, the sheets being secured together at a plurality Of spaced fastening points disposed at regularly spaced intervals over the area of the sheets of material, said points being spaced from each other in the longitudinal and vertical directions thereby to permit insertion of strips of microfilm between the two sheets of material in directions substantially at right angles, each strip of microfilm being located between the sheets by the material extending between the sheets of material at the fastening points.
Claim 3
Dependent Claim
27 words
The device according to claim 1 in which one of the sheets has a larger dimension in one direction so as to define an overhanging edge portion.
Claim 4
Dependent Claim
26 words
The device according to claim 2 in which said edge portion is provided with an adhesive coating whereby the device can be secured to a backing.
Claim 5
Dependent Claim
30 words
The device according to claim 2 in which said edge portion is of a sufficient length to enable it to be folded over the other sheet to define a file.
Claim 6
Dependent Claim
35 words
The device according to claim 2 in which the fastening points occur along the edges of the sheets and between the edges of the sheets in rows extending parallel to the edges of the sheets.
Claim 7
Dependent Claim
25 words
The device according to claim 2 in which the sheets are formed from transparent synthetic resin material and are welded together at said fastening points.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |