US3170834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of dressing crude asbestos
Assignee: Individual
•
Filing: 1961-07-18
•
Granted: 1965-02-23
•
Expires: 1981-07-18
Abstract
No abstract record available.
Inventors
- 👤 Oesterheld Karl Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:57
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/02; C04B20/08; B; B03; B03B; B03B1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1311180A
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US1545132A
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US1500111A
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US1642495A
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US2500154A
Cited
US2684206A
Cited
US2685825A
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US2565340A
Cited
US2838246A
Cited
US2915790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |