Patent US1876938A successfully refreshed from Google Patents.
US1876938A
Expired / Lapsed
US
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Pressure relief valve
Assignee: Individual
•
Filing: 1929-01-23
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Granted: 1932-09-13
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Expires: 1949-01-23
Abstract
No abstract record available.
Inventors
- 👤 Burchard E Horne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:06
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; F16K11/0853; F16K15/00; F16K15/02; F16K15/025; F16K15/06; F16K15/063; F16K17/00; F16K17/02; F16K17/04; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1804; Y10T137/1812; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836; Y10T137/7837; Y10T137/7838; Y10T137/7904; Y10T137/7922; Y10T137/7923; Y10T137/7929
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) | 1935-09-13 | 1936-03-14 | 1936-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-09-13 | 1940-03-14 | 1940-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-09-13 | 1944-03-14 | 1944-09-13 | $7700.00 | Window Closed / Lapsed |