US3043526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pulping paper stock
Assignee: John W Bolton and Sons Inc
•
Filing: 1958-08-29
•
Granted: 1962-07-10
•
Expires: 1978-08-29
Abstract
No abstract record available.
Inventors
- 👤 Cowles Edwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:01
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12; D21B1/30; D21B1/34; D21B1/345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH191025A
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US2139430A
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US2557174A
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US2641971A
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US2703533A
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US2658426A
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US2719462A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |