US3506445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic film materials
Assignee: Bexford Ltd
•
Filing: 1965-12-06
•
Granted: 1970-04-14
•
Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Terence A Abbott
- 👤 Margaret L Clachan
- 👤 Basil R Shephard
- 👤 David R Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:49
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; G03C1/52; G03C1/60; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1241738A
Cited
GB589197A
Cited
US2591542A
Cited
US2792303A
Cited
GB732607A
Cited
US3023101A
Cited
US3025163A
Cited
GB865680A
Cited
GB910038A
Cited
FR1366532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |