US3530296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for measuring quantities associated with the filler distribution of paper
Assignee: Valmet Montreal Inc
•
Filing: 1968-03-29
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Granted: 1970-09-22
•
Expires: 1988-03-29
Abstract
No abstract record available.
Inventors
- 👤 Antti Ilmari Lehtinen
- 👤 Eino Juhani Kuusi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:12
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/34; G01N33/346; G01N23/00; G01N23/22; G01N23/223; G01N2223/00; G01N2223/07; G01N2223/076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2977478A
Cited
US3056027A
Cited
US2963585A
Cited
US3121166A
Cited
US3254211A
Cited
US3383510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |