Patent US3171580A successfully refreshed from Google Patents.
US3171580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lid
Assignee: Sweetheart Plastics Inc
•
Filing: 1963-03-19
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Granted: 1965-03-02
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Expires: 1983-03-19
Abstract
No abstract record available.
Inventors
- 👤 Davis Paul
- 👤 Jr Lloyd G Mcallister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:29
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D2231/00; B65D2231/02; B65D2231/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A LID COMPRISING A MAIN CLOSURE DISC FOR COVERING THE CONTAINER OPENING WITH WHICH THE LID IS TO BE USED, A WELL EXTENDING FROM THE PLANE OF THE DISC TO ONE SIDE THEREOF AND HAVING A SIDE WALL WHICH IS APPRECIABLY WEAKER STRUCTURALLY THAN THE DISC AND THE END WALL OF THE WELL,
Claim 2
Dependent Claim
53 words
A LID COMPRISING A MAIN CLOSURE DISC FOR COVERING THE CONTAINER OPENING WITH WHICH THE LID IS TO BE USED, A WELL EXTENDING FROM THE PLANE OF THE DISC TO ONE SIDE THEREOF AND HAVING A SIDE WALL WHICH IS APPRECIABLY WEAKER STRUCTURALLY THAN THE DISC AND THE END WALL OF THE WELL,
References Cited (Backward Citations)
US2073941A
Cited
US2157646A
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US2312358A
Cited
US2761598A
Cited
US3076584A
Cited
US3048317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |