Patent US1200842A successfully refreshed from Google Patents.
US1200842A
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US
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Fluid-pressure check-valve.
Assignee: FRANK J HOUK
•
Filing: 1915-06-29
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Granted: 1916-10-10
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Expires: 1935-06-29
Abstract
No abstract record available.
Inventors
- 👤 Fred H Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:46
CPC Classifications
F; F16; F16K; F16K17/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723; Y10T137/7731; Y10T137/7733; Y10T137/7837; Y10T137/7876; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/7917; Y10T137/7918; Y10T137/792; Y10T137/8593; Y10T137/86292
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) | 1919-10-10 | 1920-04-10 | 1920-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-10-10 | 1924-04-10 | 1924-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-10-10 | 1928-04-10 | 1928-10-10 | $7700.00 | Window Closed / Lapsed |