Patent US1921145A successfully refreshed from Google Patents.
US1921145A
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Method of and apparatus for controlling the flow of fluids
Assignee: Elsag Bailey Inc
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Filing: 1930-10-11
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Granted: 1933-08-08
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Expires: 1950-10-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Albright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:18
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/24; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0363; Y10T137/2496; Y10T137/2499; Y10T137/4456; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/7762; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7788; Y10T137/8593; Y10T137/87571; Y10T137/87676
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) | 1936-08-07 | 1937-02-06 | 1937-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-08-07 | 1941-02-06 | 1941-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-08-07 | 1945-02-06 | 1945-08-08 | $7700.00 | Window Closed / Lapsed |