Patent US2522071A successfully refreshed from Google Patents.
US2522071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve structure for passage of strip material through the wall of liquid treatment baths
Assignee: Individual
•
Filing: 1944-04-03
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Granted: 1950-09-12
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Expires: 1964-04-03
Abstract
No abstract record available.
Inventors
- 👤 Tait William Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:40
CPC Classifications
C; C25; C25D; C25D7/00; C25D7/06; C25D7/0614; C25D17/00; C25D17/004; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US900169A
Cited
US1072705A
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US1191386A
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US1768358A
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US1864490A
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US2212588A
Cited
GB467019A
Cited
US2271736A
Cited
US2384660A
Cited
US2377550A
Cited
US2378002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |