US787422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Whistle-valve.
Assignee: CROSBY STEAM GAGE AND VALVE Co
•
Filing: 1904-02-15
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Granted: 1905-04-18
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Expires: 1924-02-15
Abstract
No abstract record available.
Inventors
- 👤 Frank L Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:52
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/20; F01D17/22; F01D17/26; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/042; F15B13/0426; Y; Y10; Y10S; Y10S261/00; Y10S261/53
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) | 1908-04-17 | 1908-10-17 | 1909-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-04-17 | 1912-10-17 | 1913-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-04-17 | 1916-10-17 | 1917-04-18 | $7700.00 | Window Closed / Lapsed |