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US1169725A
Expired / Lapsed
US
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Filter-cleaning device.
Assignee: Individual
•
Filing: 1915-01-16
•
Granted: 1916-01-25
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Expires: 1935-01-16
Abstract
No abstract record available.
Inventors
- 👤 Herbert N Kilby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:20
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/05; B01D29/055; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18416
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) | 1919-01-24 | 1919-07-26 | 1920-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-01-24 | 1923-07-26 | 1924-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-01-24 | 1927-07-26 | 1928-01-25 | $7700.00 | Window Closed / Lapsed |