Patent US2443091A successfully refreshed from Google Patents.
US2443091A
Expired / Lapsed
US
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Cleaning apparatus having rotary conveyer and recirculating liquid systems
Assignee: Metalwash Machinery Co
•
Filing: 1940-10-15
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Granted: 1948-06-08
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Expires: 1960-10-15
Abstract
No abstract record available.
Inventors
- 👤 Erich R Zademach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:11
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/24; A47L15/241; A47L15/242; A47L15/243; B; B65; B65G; B65G29/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE685117C
Cited
US1707159A
Cited
DE468745C
Cited
SE66731C1
Cited
US901757A
Cited
US932193A
Cited
US1272346A
Cited
US1428491A
Cited
US1734463A
Cited
US1604455A
Cited
US1553428A
Cited
US1525756A
Cited
US1761812A
Cited
US1581528A
Cited
US1765996A
Cited
US1724087A
Cited
US1896149A
Cited
US1762847A
Cited
AU598527A
Cited
US1716406A
Cited
US1972711A
Cited
US1944679A
Cited
US1839172A
Cited
US1774981A
Cited
US1862485A
Cited
GB342149A
Cited
US1867197A
Cited
US1902238A
Cited
US1831388A
Cited
US1942828A
Cited
US1910931A
Cited
US2151437A
Cited
US2122018A
Cited
US2036503A
Cited
US2175677A
Cited
US2250233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |