US2453210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic means for regulating electric steam generators
Assignee: Shawinigan Water and Power Co
•
Filing: 1945-05-25
•
Granted: 1948-11-09
•
Expires: 1965-05-25
Abstract
No abstract record available.
Inventors
- 👤 Eaton Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:03
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/28; F22B1/30; Y; Y10; Y10S; Y10S159/00; Y10S159/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US437551A
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US450902A
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US1665793A
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US1415952A
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US1825690A
Cited
GB374309A
Cited
US2294501A
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US2185786A
Cited
US2325241A
Cited
US2395583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |