US2946476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device
Assignee: Imperial Chemical Industries Ltd
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Filing: 1956-08-20
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Granted: 1960-07-26
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Expires: 1976-08-20
Abstract
No abstract record available.
Inventors
- 👤 Ross Herbert John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:50
CPC Classifications
D; D06; D06B; D06B9/00; C; C23; C23G; C23G5/00; C23G5/02; C23G5/04; D06F; D06F43/00; F; F17; F17B; F17B1/00
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) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |