Patent US2544969A successfully refreshed from Google Patents.
US2544969A
Expired / Lapsed
US
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Method of making tear-off container caps
Assignee: West Pharmaceutical Services Inc
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Filing: 1948-10-01
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Granted: 1951-03-13
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Expires: 1968-10-01
Abstract
No abstract record available.
Inventors
- 👤 James E Underwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:29
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US598952A
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US758273A
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US1100935A
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US1214675A
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US1654720A
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US1899210A
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US2444506A
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US2443185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |