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Patent US3744820A successfully refreshed from Google Patents.
US3744820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous library catalog card
Assignee: Individual
•
Filing: 1970-12-02
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Granted: 1973-07-10
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Expires: 1990-12-02
Abstract
Abstract A continuous web for library catalogue cards having a plurality of slit lines longitudinally spaced 7.5 centimeters apart, each slit line extending 12.5 centimeters transversely between edge carrier portions of the form such that upon removal of the carrier portions outwardly of the slit lines a plurality of standard 7.5 centimeters X 12.5 centimeters catalogue cards are provided. Longitudinally extending lines of uniquely shaped feed holes or perforations are provided in the carrier portions of the form which permit printing of the cards by means of existing high speed printers of United States manufacture despite the cards being dimensioned in the metric system and the feed of the printers being dimensioned in the English system.
Inventors
- 👤 V Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:45
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
A continuous library catalog card web of paper having a plurality of slit lines longitudinally spaced 7.5 centimeters apart, said lines being disposed centrally of said web and extending transversely 12.5 centimeters between longitudinally extending edge carrier portions of the web, said carrier portions being removable to provide catalog cards of standard 7.5 centimeters by 12.5 centimeters with clean uninterrupted edges, said carrier portions having longitudinally extending lines of elongate feed perforations having center-to-center spacing of 1.25 centimeters, said perforations being symmetrically disposed with respect to said slit lines and each being generally defined by a rectangle five-sixteenths inch long and five thirty-seconds inch wide with rounded longitudinally opposed ends, said perforations constituting means for engaging the feed pins with one-half inch spacing of high speed printers for continuously printing metric library catalog cards on English system highspeed printers.
Claim 2
Dependent Claim
139 words
A continuous library catalog card web of paper having a plurality of slit lines longitudinally spaced 7.5 centimeters apart, said lines being disposed centrally of said web and extending transversely 12.5 centimeters between longitudinally extending edge carrier portions of the web, said carrier portions being removable to provide catalog cards of standard 7.5 centimeters by 12.5 centimeters with clean uninterrupted edges, said carrier portions having longitudinally extending lines of elongate feed perforations having center-to-center spacing of 1.25 centimeters, said perforations being symmetrically disposed with respect to said slit lines and each being generally defined by a rectangle five-sixteenths inch long and five thirty-seconds inch wide with rounded longitudinally opposed ends, said perforations constituting means for engaging the feed pins with one-half inch spacing of high speed printers for continuously printing metric library catalog cards on English system highspeed printers.
Claim 3
Dependent Claim
30 words
The form according to claim 1, further defined by longitudinally extending perforate separation lines intersecting the opposite ends of said slit lines to enable ready removal of said carrier portions.
Claim 4
Dependent Claim
34 words
The form according to claim 2, further defined by transverse perforate separation lines extending from and being aligned with the opposite ends of said slit lines to the side marginal edges of said form.
Claim 5
Dependent Claim
19 words
The form according to claim 3, further defined by said carrier portions having each a Width of 2.5 centimeters.
Claim 6
Dependent Claim
34 words
The form according to claim 1, further defined by transverse perforate separation lines extending from and being aligned with the opposite ends of said slit lines to the side marginal edges of said form.
Claim 7
Dependent Claim
19 words
The form according to claim 5, further defined by said carrier portions having each a width of 2.5 centimeters.
Claim 8
Dependent Claim
19 words
The form according to claim 1, further defined by said carrier portions having each a width of 2.5 centimeters.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |