Patent US3061101A successfully refreshed from Google Patents.
US3061101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter structure carrying pressure relief and anti-drain-back valves
Assignee: Dana Inc
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Filing: 1960-05-17
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Granted: 1962-10-30
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Expires: 1980-05-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Kingsley E Humbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:03
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; B; B01; B01D; B01D27/00; B01D27/08; B01D27/10; B01D27/103; B01D27/106; B01D35/00; B01D35/30; B01D35/306; Y; Y10; Y10S; Y10S210/00; Y10S210/17
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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |