Patent US2704840A successfully refreshed from Google Patents.
Patent US3170638A successfully refreshed from Google Patents.
US3170638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing and disintegrating head
Assignee: Individual
•
Filing: 1963-04-12
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Granted: 1965-02-23
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Expires: 1983-04-12
Abstract
No abstract record available.
Inventors
- 👤 Linwood P Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:06
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/11; B01F27/116; B01F27/17; B01F27/171; B01F27/19; B01F27/192
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A MIXING HEAD COMPRISING (A) OPPOSED SPACED APART PUMPING MEANS ADAPTED TO BE SUBMERGED IN A FLUID, SAID PUMPING MEANS INCLUDING A FRUSTO-CONICAL MEMBER HAVING INTERNAL VANES, (B) MEANS FOR IMPARTING A ROTARY MOTION TO SAID SPACED PUMPING MEANS TO CREATE A PUMPING ACTION IN WHICH OPPOSED STREAMS OF PUMPED FLUID ARE DIRECTED TOWARD ONE ANOTHER,
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |