Patent US2968389A successfully refreshed from Google Patents.
US2968389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prepressing and dividing particle mats
Assignee: Industrial Development Co SAL
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Filing: 1957-05-03
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Granted: 1961-01-17
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Expires: 1977-05-03
Abstract
No abstract record available.
Inventors
- 👤 Harold E Erickson
- 👤 Robert W Riley
- 👤 Dale L Schubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:21
CPC Classifications
B; B27; B27B; B27B5/00; B27N; B27N3/00; B27N3/08; B27N3/18; B27N3/183; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7755; Y10T83/7763; Y10T83/7776
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |