US2937781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure devices
Assignee: Individual
•
Filing: 1957-05-07
•
Granted: 1960-05-24
•
Expires: 1977-05-07
Abstract
No abstract record available.
Inventors
- 👤 Charles F Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:42
CPC Classifications
B; B65; B65D; B65D55/00; B65D55/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1258113A
Cited
CA472739A
Cited
US1633197A
Cited
US1924242A
Cited
DE710149C
Cited
US2599472A
Cited
US2581849A
Cited
FR1020624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |