US2852141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Washex Machinery Corp
•
Filing: 1955-10-27
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Granted: 1958-09-16
•
Expires: 1975-10-27
Abstract
No abstract record available.
Inventors
- 👤 Landon Steven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:15
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/16; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/52; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0446; B01D37/00; B01D37/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2572971A
Cited
CH49270A
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US1443500A
Cited
US1895747A
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US1912505A
Cited
US2027681A
Cited
US2108021A
Cited
US2693882A
Cited
US2784846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |