Patent US2535732A successfully refreshed from Google Patents.
US2535732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed wet end for paper machines
Assignee: Beloit Iron Works Inc
•
Filing: 1946-02-13
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Granted: 1950-12-26
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Expires: 1966-02-13
Abstract
No abstract record available.
Inventors
- 👤 John E Goodwillie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:02
CPC Classifications
D; D21; D21F; D21F9/00; D21F9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21201E
Cited
DE528352C
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US1870971A
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US1798821A
Cited
US1928107A
Cited
DE656453C
Cited
US2186761A
Cited
US2171739A
Cited
US2345647A
Cited
US2396694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |