US3344774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Imperial Chemical Industries Ltd
•
Filing: 1966-06-29
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Granted: 1967-10-03
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Expires: 1986-06-29
Abstract
No abstract record available.
Inventors
- 👤 Swindells Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:50
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/0005; B; B05; B05C; B05C13/00; D06; D06B; D06B5/00; D21H23/00; D21H23/02; D21H23/22; D06B2700/00; D06B2700/18
Claims Analysis
Total Claims: 0
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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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |