US2074883A
Expired / Lapsed
US
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Method of and apparatus for controlling the flow of fluids
Assignee: Askania Werke AG
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Filing: 1936-02-17
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Granted: 1937-03-23
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Expires: 1956-02-17
Abstract
No abstract record available.
Inventors
- 👤 Ziebolz Herbert
- 👤 Wunsch Guido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:07
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/035; G05D11/13; G05D11/131; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0363; Y10T137/0368; Y10T137/2278; Y10T137/2322; Y10T137/2496; Y10T137/2499; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/776; Y10T137/7781; Y10T137/7784; Y10T137/7786; Y10T137/7792; Y10T137/8593; Y10T137/877; Y10T137/87708; Y10T137/87764
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-03-22 | 1940-09-21 | 1941-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-22 | 1944-09-21 | 1945-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-22 | 1948-09-21 | 1949-03-23 | $7700.00 | Window Closed / Lapsed |