US2098893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic multiple valve control
Assignee: JESSIE L STAEGEMANN
•
Filing: 1936-09-03
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Granted: 1937-11-09
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Expires: 1956-09-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:51
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/27; Y10T137/4238; Y10T137/4245; Y10T137/4252; Y10T137/7287; Y10T137/729; Y10T137/7358; Y10T137/7368; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86413; Y10T137/86445
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) | 1940-11-08 | 1941-05-10 | 1941-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-11-08 | 1945-05-10 | 1945-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-11-08 | 1949-05-10 | 1949-11-09 | $7700.00 | Window Closed / Lapsed |