US3935430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Notch and file system
Assignee: Microseal Corp
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Filing: 1971-05-03
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Granted: 1976-01-27
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Expires: 1991-05-03
Abstract
Abstract The method or system of indexing cards for visual or machine filing and retrieval includes an index card having a plurality of notch areas located along at least a portion of the card edge with each of the notch areas being assigned at least two values and being adapted to receive a plurality of superimposable, separately identifiable notches to separately designate each notch area value.
Inventors
- 👤 Thomas P. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:55
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A notch and file card comprising superimposable notches along a portion of an edge thereof, said notches being of different configurations so that when said notches are superimposed upon each other they may be visibly distinguished from each other, said notches including first, second and third notches, each of said notches having a depth and a width, said first notch being wider than said second or third notches and said second notch being wider than said third, said third notch being deeper than said first or second notch and said second notch being deeper than said first notch.
Claim 2
Dependent Claim
98 words
A notch and file card comprising superimposable notches along a portion of an edge thereof, said notches being of different configurations so that when said notches are superimposed upon each other they may be visibly distinguished from each other, said notches including first, second and third notches, each of said notches having a depth and a width, said first notch being wider than said second or third notches and said second notch being wider than said third, said third notch being deeper than said first or second notch and said second notch being deeper than said first notch.
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) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |