Patent US2527015A successfully refreshed from Google Patents.
US2527015A
Expired / Lapsed
US
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Air washing and cleaning apparatus
Assignee: Individual
•
Filing: 1945-06-07
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Granted: 1950-10-24
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Expires: 1965-06-07
Abstract
No abstract record available.
Inventors
- 👤 Robert A Lhota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:07
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; B01D47/08; B01D47/085; F; F24; F24F; F24F8/00; F24F8/10; F24F8/117; F24F8/133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2087219A
Cited
US1459442A
Cited
GB312151A
Cited
US1841556A
Cited
US1894864A
Cited
GB331219A
Cited
US1992762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |