US2615697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersion apparatus
Assignee: Patterson Foundry & Machine Co
•
Filing: 1949-12-10
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Granted: 1952-10-28
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Expires: 1969-12-10
Abstract
No abstract record available.
Inventors
- 👤 Valentine Kenneth Sterling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:22
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; C02F3/205; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/232; B01F23/2321; B01F23/2322; B01F23/233; B01F23/2334; B01F23/23342; B01F23/2336; B01F23/23362; B01F27/00; B01F27/80; B01F27/81; C11; C11C; C11C3/00; C11C3/12; B01F25/00; B01F2025/91; B01F2025/918; B01F27/05; B01F27/11; B01F27/19; B01F27/191; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |