US642808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve.
Assignee: Individual
•
Filing: 1899-06-20
•
Granted: 1900-02-06
•
Expires: 1919-06-20
Abstract
No abstract record available.
Inventors
- 👤 John Stumpf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:10
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/08; F16K15/10; F16K15/06; F16K15/063; F16K15/064; Y; Y10; Y10S; Y10S137/00; Y10S137/903; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7859; Y10T137/786; Y10T137/7904; Y10T137/7922
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 |