Patent US1399181A successfully refreshed from Google Patents.
US1399181A
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US
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Automatic control of reactions
Assignee: Dorr Co
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Filing: 1919-12-26
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Granted: 1921-12-06
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Expires: 1939-12-26
Abstract
No abstract record available.
Inventors
- 👤 Bascom Perry Hadwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:55
CPC Classifications
G; G05; G05D; G05D21/00; G05D21/02; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/034; Y10T137/2496; Y10T137/2499; Y10T137/2509; Y10T137/8593; Y10T137/86187; Y10T137/86228; Y10T436/00; Y10T436/12
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) | 1924-12-05 | 1925-06-06 | 1925-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-12-05 | 1929-06-06 | 1929-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-12-05 | 1933-06-06 | 1933-12-06 | $7700.00 | Window Closed / Lapsed |