US2608912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing paper
Assignee: PREC PAPER Inc
•
Filing: 1949-02-23
•
Granted: 1952-09-02
•
Expires: 1969-02-23
Abstract
No abstract record available.
Inventors
- 👤 Harold M Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:05
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1154183A
Cited
US1584345A
Cited
US1771600A
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US1847426A
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US1909150A
Cited
US2264941A
Cited
US2381286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |