US3463464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: IRVIN E NUTTER
•
Filing: 1967-09-26
•
Granted: 1969-08-26
•
Expires: 1987-09-26
Abstract
No abstract record available.
Inventors
- 👤 Irvin E Nutter
- 👤 Dale E Nutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:44
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA645354A
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US2951691A
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US2979316A
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US3022054A
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US3019003A
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US3125614A
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US3080155A
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US3087711A
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US3162699A
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GB1026371A
Cited
US3245669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |