Patent US1237252A successfully refreshed from Google Patents.
US1237252A
Expired / Lapsed
US
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Valve for use in heating systems.
Assignee: Individual
•
Filing: 1913-06-19
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Granted: 1917-08-14
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Expires: 1933-06-19
Abstract
No abstract record available.
Inventors
- 👤 Andrew G Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:27
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/16; F16K3/18; F16K3/188; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3009; Y10T137/3015; Y10T137/3021; Y10T137/304
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) | 1920-08-13 | 1921-02-12 | 1921-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-08-13 | 1925-02-12 | 1925-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-08-13 | 1929-02-12 | 1929-08-14 | $7700.00 | Window Closed / Lapsed |