Patent US3995173A successfully refreshed from Google Patents.
US3067779A
Expired / Lapsed
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Electroconductive papermaker's felt
Assignee: Valmet Fabrics Inc
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Filing: 1960-02-04
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Granted: 1962-12-11
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Expires: 1980-02-04
Abstract
No abstract record available.
Inventors
- 👤 Jr John H Draper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/10; D21F1/105; D21F1/0027; D21F1/0036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA534356A
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US1178556A
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FR447299A
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DE449079C
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US1739766A
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US1925917A
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US2038712A
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US2327756A
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US2375997A
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US2680079A
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US2955969A
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US3000106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |