US2970670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid cleaning apparatus
Assignee: Honeywell Inc
•
Filing: 1958-08-06
•
Granted: 1961-02-07
•
Expires: 1978-08-06
Abstract
No abstract record available.
Inventors
- 👤 Keith M Nodolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:26
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/04; B03C3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1992974A
Cited
US2114682A
Cited
US2381455A
Cited
US2626008A
Cited
US2769505A
Cited
US2822057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |