US3391070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of selectively treating a plastic film to improve anchorage characteristics
Assignee: 3M Co
•
Filing: 1965-06-17
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Granted: 1968-07-02
•
Expires: 1985-06-17
Abstract
No abstract record available.
Inventors
- 👤 Albert W Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:22
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/10; B29C59/12; B29C59/103; B29C48/00; B29C48/001; B29C48/0018; B29C48/0019; B29C48/03; B29C48/09; B29C48/10; B29L; B29L2023/00; B29L2023/001
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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |