US2643015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamperproof container closure
Assignee: Development Research Inc
•
Filing: 1949-12-08
•
Granted: 1953-06-23
•
Expires: 1969-12-08
Abstract
No abstract record available.
Inventors
- 👤 Jack W Soffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:42
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/40; B65D41/00; B65D41/32; B65D41/46; B65D41/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US695759A
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US2000200A
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US2092547A
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US2169686A
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US2228542A
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US2157646A
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US2326480A
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US2403511A
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US2546566A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |