US3721382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispensing packages
Assignee: Nortel Networks Ltd
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Filing: 1971-07-13
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Granted: 1973-03-20
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Expires: 1991-07-13
Abstract
Abstract In a carton for dispensing strand material of substantial weight, inexpensive and relatively durable means for supporting the carton in the form of a corner knock-out is provided, whereby the weight is exerted on the two-sides of the carton, although supported by one hand.
Inventors
- 👤 R Cavanagh
- 👤 A Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:22
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/44; B65D5/46; B65D5/46072; B65D5/4608; B65D85/00; B65D85/67; B65D85/675
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
107 words
In a cardboard carton having first, second and third side panels, the improvement comprising: said first side panel including a knock-out portion delineated by an arc of perforations extending between the common edges of said first side panel and said second and third side panels, the concave side of said arc facing a common point of said first, second and third side panels, and by a line of perforations between said common point and a center point of said arc, the length of said line of perforations being substantially equal to the difference between the radii of the circumscribing and inscribing circles of said first side panel.
Claim 2
Dependent Claim
107 words
In a cardboard carton having first, second and third side panels, the improvement comprising: said first side panel including a knock-out portion delineated by an arc of perforations extending between the common edges of said first side panel and said second and third side panels, the concave side of said arc facing a common point of said first, second and third side panels, and by a line of perforations between said common point and a center point of said arc, the length of said line of perforations being substantially equal to the difference between the radii of the circumscribing and inscribing circles of said first side panel.
Claim 3
Dependent Claim
21 words
The carton as defined in claim 1 in which said second and third side panels form narrow sides of said carton.
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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |