US2592528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: U S HOFFMAN MACHINERY Corp
•
Filing: 1947-04-01
•
Granted: 1952-04-15
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Expires: 1967-04-01
Abstract
No abstract record available.
Inventors
- 👤 Eugene A Failmezger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:22
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/30; B01D29/00; B01D29/39; B01D29/41; B01D2201/00; B01D2201/30; B01D2201/301; B01D2201/302
Claims Analysis
Total Claims: 0
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US2491144A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |