US2414220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature control and safety shutoff
Assignee: Milwaukee Gas Specialty Co
•
Filing: 1943-05-13
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Granted: 1947-01-14
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Expires: 1963-05-13
Abstract
No abstract record available.
Inventors
- 👤 Henry F Alfery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:39
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/186; F23; F23N; F23N1/00; F23N1/08; F23N1/087; F23N5/00; F23N5/02; F23N5/10; F23N5/107
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) | 1950-01-13 | 1950-07-15 | 1951-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-01-13 | 1954-07-15 | 1955-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-01-13 | 1958-07-15 | 1959-01-14 | $7700.00 | Window Closed / Lapsed |