Patent US1589138A successfully refreshed from Google Patents.
US1456946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic steam-stop valve
Assignee: Individual
•
Filing: 1921-01-26
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Granted: 1923-05-29
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Expires: 1941-01-26
Abstract
No abstract record available.
Inventors
- 👤 Stork William Boteler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:11
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/20; F16K17/22; F16K17/32; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7782; Y10T137/7783; Y10T137/7784; Y10T137/7785
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) | 1926-05-28 | 1926-11-27 | 1927-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-05-28 | 1930-11-27 | 1931-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-05-28 | 1934-11-27 | 1935-05-29 | $7700.00 | Window Closed / Lapsed |