US3415382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter utilizing glass balls for filtering fluids
Assignee: Individual
•
Filing: 1966-07-18
•
Granted: 1968-12-10
•
Expires: 1986-07-18
Abstract
No abstract record available.
Inventors
- 👤 John E Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:12
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/02; B01D39/06; B01D24/00; B01D24/02; B01D24/04; B01D24/08; B01D27/00; B01D27/02; B01D27/08; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/52; B01D29/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US619569A
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US772389A
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US2059358A
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US2626057A
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US3262563A
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US3289847A
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US3182803A
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US3260367A
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US3312349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |