US1461174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaner
Assignee: IRENE E BENNETT
•
Filing: 1917-09-08
•
Granted: 1923-07-10
•
Expires: 1937-09-08
Abstract
No abstract record available.
Inventors
- 👤 Ashley C Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:01
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/02; B01D47/021; Y; Y10; Y10S; Y10S55/00; Y10S55/27; Y10S55/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-07-09 | 1927-01-08 | 1927-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-07-09 | 1931-01-08 | 1931-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-07-09 | 1935-01-08 | 1935-07-10 | $7700.00 | Window Closed / Lapsed |