US2816687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure for containers
Assignee: Shell Development Co
•
Filing: 1954-09-14
•
Granted: 1957-12-17
•
Expires: 1974-09-14
Abstract
No abstract record available.
Inventors
- 👤 Clifton H Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:26
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/18; B65D2251/00; B65D2251/0003; B65D2251/0006; B65D2251/0015; B65D2251/0068; B65D2251/0078
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US225752A
Cited
US2751073A
Cited
US1788282A
Cited
US1722256A
Cited
US1739759A
Cited
US2121843A
Cited
US2460720A
Cited
US2681742A
Cited
FR1015071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |