US939196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-valve.
Assignee: Individual
•
Filing: 1908-08-25
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Granted: 1909-11-02
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Expires: 1928-08-25
Abstract
No abstract record available.
Inventors
- 👤 Frank C Goff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:19
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/04; F16K24/042; F16K24/044; Y; Y10; Y10S; Y10S137/00; Y10S137/901; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/4238; Y10T137/4245; Y10T137/7287; Y10T137/7358; Y10T137/7423; Y10T137/7426; Y10T137/7436; Y10T137/8593; Y10T137/87917
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) | 1912-11-01 | 1913-05-03 | 1913-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-11-01 | 1917-05-03 | 1917-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-11-01 | 1921-05-03 | 1921-11-02 | $7700.00 | Window Closed / Lapsed |