Patent US2935840A successfully refreshed from Google Patents.
US2935840A
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Fluid mixing chamber
Assignee: Metallbau Semler GmbH
•
Filing: 1954-02-26
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Granted: 1960-05-10
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Expires: 1974-02-26
Abstract
No abstract record available.
Inventors
- 👤 Fritz Dipl Ing Schoppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:51
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/42; F23R3/58; B; B01; B01F; B01F25/00; B01F25/20; B01F25/30; B01F25/31; B01F25/313; B01F25/3131; B01J; B01J19/00; F23C; F23C3/00; F23C7/00; F23C7/02; F23D; F23D14/00; F23D14/46; F23D14/62; F26; F26B; F26B23/00; F26B23/02; B01F2025/91; B01F2025/918; Y; Y10; Y10S; Y10S261/00; Y10S261/54
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) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |