US2592527A
Expired / Lapsed
US
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Assignee: US Hoffman Machinery Corp
•
Filing: 1945-12-07
•
Granted: 1952-04-15
•
Expires: 1965-12-07
Abstract
No abstract record available.
Inventors
- 👤 Francis J Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:09
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/02; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/39; B01D29/41; B01D35/00; B01D35/14; B01D35/147; B01D2201/00; B01D2201/04; B01D2201/0415
Claims Analysis
Total Claims: 0
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GB390889A
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US1989795A
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US2088199A
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US2210213A
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US2392354A
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US2430078A
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US2435115A
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US2522502A
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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 |