Patent US3419172A successfully refreshed from Google Patents.
US3419172A
Expired / Lapsed
US
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Closure system for containers
Assignee: Dow Silicones Corp
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Filing: 1967-12-14
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Granted: 1968-12-31
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Expires: 1987-12-14
Abstract
No abstract record available.
Inventors
- 👤 Headie O Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:45
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/02; B65D1/0223; B65D1/023; B65D1/0238; B65D51/00; B65D51/18; B65D51/20; B65D2251/00; B65D2251/0003; B65D2251/0006; B65D2251/0015; B65D2251/0068; B65D2251/0071; B65D2251/09; Y; Y10; Y10S; Y10S215/00; Y10S215/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |