Patent US1933641A successfully refreshed from Google Patents.
US1933641A
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Method of and apparatus for proportioning gaseous fluids
Assignee: Cutler Hammer Inc
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Filing: 1932-07-05
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Granted: 1933-11-07
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Expires: 1952-07-05
Abstract
No abstract record available.
Inventors
- 👤 Edwin X Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:13
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/80; B01F35/83; B01F35/831; B01F23/00; B01F23/10; B01F23/19; B01F23/191; B01F33/00; B01F33/80; B01F33/81; B01F33/812; B01F33/813; B01F35/833; C; C10; C10J; C10J1/00; C10J1/02; C10J1/06; C10J1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0346; Y10T137/0368; Y10T137/2496; Y10T137/2499; Y10T137/4456; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86163; Y10T137/86187; Y10T137/86196
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) | 1936-11-06 | 1937-05-08 | 1937-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-11-06 | 1941-05-08 | 1941-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-11-06 | 1945-05-08 | 1945-11-07 | $7700.00 | Window Closed / Lapsed |