US642608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for inflation.
Assignee: FREDERICK L SOWLE
•
Filing: 1899-11-27
•
Granted: 1900-02-06
•
Expires: 1919-11-27
Abstract
No abstract record available.
Inventors
- 👤 Roland C Hilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:56
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/20; Y; Y10; Y10T; Y10T137/00; Y10T137/3584; Y10T137/8593; Y10T137/87917; Y10T137/88054
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) | 1903-02-06 | 1903-08-08 | 1904-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-02-06 | 1907-08-08 | 1908-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-02-06 | 1911-08-08 | 1912-02-07 | $7700.00 | Window Closed / Lapsed |