US3227606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing paper stocks
Assignee: Individual
•
Filing: 1961-05-17
•
Granted: 1966-01-04
•
Expires: 1981-05-17
Abstract
No abstract record available.
Inventors
- 👤 Bidwell Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:48
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/06; D21B1/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2523642A
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US2641164A
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US2565420A
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US2667106A
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US2893909A
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US2855829A
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US2717195A
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US2879952A
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US2936128A
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US2917245A
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |