Patent US3109577A successfully refreshed from Google Patents.
US3109577A
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Carton opening means
Assignee: Primerica Inc
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Filing: 1963-01-17
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Granted: 1963-11-05
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Expires: 1983-01-17
Abstract
No abstract record available.
Inventors
- 👤 William C Knipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:41
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/54; B65D5/5405; B65D5/542; B65D5/5435; Y; Y10; Y10S; Y10S229/00; Y10S229/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AN OPENING MEANS FOR A TUBULAR CARTON HAVING FRONT, REAR AND BOTTOM PANELS AND A COVER PORTION; SAID MEANS COMPRISING A TEAR STRIP DETACHABLY CONNECTED ALONG ONE EDGE BY A SUBSTANTIALLY CURVILINEAR LINE OF WEAKNESS TO SAID COVER PORTION AND ALONG THE OTHER EDGE BY A SUBSTANTIALLY CURVILINEAR LINE OF WEAKNESS TO A FLAP ADHERED TO SAID FRONT PANEL.
Claim 2
Dependent Claim
59 words
AN OPENING MEANS FOR A TUBULAR CARTON HAVING FRONT, REAR AND BOTTOM PANELS AND A COVER PORTION; SAID MEANS COMPRISING A TEAR STRIP DETACHABLY CONNECTED ALONG ONE EDGE BY A SUBSTANTIALLY CURVILINEAR LINE OF WEAKNESS TO SAID COVER PORTION AND ALONG THE OTHER EDGE BY A SUBSTANTIALLY CURVILINEAR LINE OF WEAKNESS TO A FLAP ADHERED TO SAID FRONT PANEL.
References Cited (Backward Citations)
US2680558A
Cited
US3018942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |