Patent US2252916A successfully refreshed from Google Patents.
US2252916A
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Plate-type apparatus
Assignee: Aluminium Plant & Vessel Co
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Filing: 1939-03-20
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Granted: 1941-08-19
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Expires: 1959-03-20
Abstract
No abstract record available.
Inventors
- 👤 Crosby William Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:04
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/08; F28F3/083; A; A23; A23B; A23B2/00; A23B2/40; A23B2/42; A23B2/44; B; B01; B01D; B01D25/00; B01D25/12; B01D25/172; B01D25/32; B01D25/34; B01D25/343
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-08-18 | 1945-02-17 | 1945-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-18 | 1949-02-17 | 1949-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-18 | 1953-02-17 | 1953-08-19 | $7700.00 | Window Closed / Lapsed |