US2608203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve and valved conduit installation
Assignee: Individual
•
Filing: 1946-08-01
•
Granted: 1952-08-26
•
Expires: 1966-08-01
Abstract
No abstract record available.
Inventors
- 👤 Donald H Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:52
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/224; F16K1/225; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/6851; Y10T137/6966; Y10T137/6991; Y10T137/6995; Y10T137/701; Y10T137/8593; Y10T137/87096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1325393A
Cited
GB189907256A
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US955150A
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US1108031A
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US1104560A
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US1229576A
Cited
US1490039A
Cited
US1716277A
Cited
US1873273A
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US2050640A
Cited
US2495584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |