US2947525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffuser tube
Assignee: FMC Corp
•
Filing: 1951-09-15
•
Granted: 1960-08-02
•
Expires: 1971-09-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:33
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/24; B03D1/26; B01; B01D; B01D21/00; B01D21/26; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/231; B01F23/23105; B01F23/2312; B01F23/23124; B01F23/23126; B01F23/231265; B03D1/1487; B03D1/245; C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; C12; C12M; C12M29/00; C12M29/06; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S261/00; Y10S261/47; Y10S261/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1755614A
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US1703967A
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US1717713A
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US1792285A
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US1849146A
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US1792286A
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DE558462C
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US2294973A
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US2271814A
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US2328655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |