Patent US3547648A successfully refreshed from Google Patents.
US3547648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copy-sheet
Assignee: 3M Co
•
Filing: 1968-01-26
•
Granted: 1970-12-15
•
Expires: 1988-01-26
Abstract
No abstract record available.
Inventors
- 👤 Burt K Sagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:09
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38235; G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/49827; G03C1/4989
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3218166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |