Patent US2653016A successfully refreshed from Google Patents.
US2653016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaning device
Assignee: Individual
•
Filing: 1950-09-25
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Granted: 1953-09-22
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Expires: 1970-09-25
Abstract
No abstract record available.
Inventors
- 👤 Jasper W Lofton
- 👤 Madison T Archer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:33
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/0201; F02M35/0202; F02M35/0203
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1153077A
Cited
US1350605A
Cited
US1823796A
Cited
US2314986A
Cited
US2324629A
Cited
US2341771A
Cited
US2509173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |