Patent US1938967A successfully refreshed from Google Patents.
US1938967A
Expired / Lapsed
US
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Heat responsive shut-off valve
Assignee: KITSON Co
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Filing: 1931-09-25
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Granted: 1933-12-12
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Expires: 1951-09-25
Abstract
No abstract record available.
Inventors
- 👤 Luther D Lovekin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:35
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/36; F16K17/38; F16K17/383; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1819
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) | 1936-12-11 | 1937-06-12 | 1937-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-11 | 1941-06-12 | 1941-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-11 | 1945-06-12 | 1945-12-12 | $7700.00 | Window Closed / Lapsed |