US3391787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous cone cleaner
Assignee: Beloit Corp
•
Filing: 1966-04-18
•
Granted: 1968-07-09
•
Expires: 1986-04-18
Abstract
No abstract record available.
Inventors
- 👤 Salomon M Salomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:37
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/08; B04C5/10; B01; B01D; B01D29/00; B01D29/11; B01D29/117; B01D29/118; B01D29/88; B01D29/90; B01D29/902; B01D29/908; B04C5/081; B01D2201/00; B01D2201/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |