US693133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic duplex check and stop valve.
Assignee: Individual
•
Filing: 1901-05-04
•
Granted: 1902-02-11
•
Expires: 1921-05-04
Abstract
No abstract record available.
Inventors
- 👤 Frank Henneboehle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:12
CPC Classifications
F; F16; F16K; F16K43/00; F16K43/008; Y; Y10; Y10S; Y10S137/00; Y10S137/904; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/7917; Y10T137/7919; Y10T137/7922; Y10T137/7929; Y10T137/8593; Y10T137/87917; Y10T137/88046; Y10T137/88062
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) | 1905-02-10 | 1905-08-12 | 1906-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-02-10 | 1909-08-12 | 1910-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-02-10 | 1913-08-12 | 1914-02-11 | $7700.00 | Window Closed / Lapsed |