US1864201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaner
Assignee: Tillotson Manufacturing Co
•
Filing: 1926-10-02
•
Granted: 1932-06-21
•
Expires: 1946-10-02
Abstract
No abstract record available.
Inventors
- 👤 Claude S Kegerreis
- 👤 Joseph B Lindecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:02
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; Y; Y10; Y10S; Y10S55/00; 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) | 1935-06-21 | 1935-12-21 | 1936-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-06-21 | 1939-12-21 | 1940-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-06-21 | 1943-12-21 | 1944-06-21 | $7700.00 | Window Closed / Lapsed |