US2452135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper pulp machine
Assignee: HARMER R LUTZ
•
Filing: 1944-10-26
•
Granted: 1948-10-26
•
Expires: 1964-10-26
Abstract
No abstract record available.
Inventors
- 👤 John C Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:47
CPC Classifications
D; D21; D21D; D21D1/00; D21D1/20; D21D1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2220676A
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US1106808A
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US1639613A
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US1749350A
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US2035994A
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US2139274A
Cited
GB516806A
Cited
US2207218A
Cited
US2371837A
Cited
US2344047A
Cited
US2340720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |