Patent US3864157A successfully refreshed from Google Patents.
Patent US2105876A successfully refreshed from Google Patents.
US2105876A
Expired / Lapsed
US
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Water pressure regulator
Assignee: Individual
•
Filing: 1936-11-30
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Granted: 1938-01-18
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Expires: 1956-11-30
Abstract
No abstract record available.
Inventors
- 👤 Birch William Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:15
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/02; F16K47/023; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7825
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) | 1941-01-17 | 1941-07-19 | 1942-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-01-17 | 1945-07-19 | 1946-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-01-17 | 1949-07-19 | 1950-01-18 | $7700.00 | Window Closed / Lapsed |