Patent US3045116A successfully refreshed from Google Patents.
Patent US3525871A successfully refreshed from Google Patents.
US3525871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for determining non-uniform paper formation
Assignee: Valmet Montreal Inc
•
Filing: 1968-02-15
•
Granted: 1970-08-25
•
Expires: 1988-02-15
Abstract
No abstract record available.
Inventors
- 👤 Antti Lehtinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:18
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/86
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2290775A
Cited
US3026415A
Cited
US3073153A
Cited
US3340400A
Cited
US3400270A
Cited
US3437823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |