US672787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reducing-valve.
Assignee: GEORGE E GILCHRIST
•
Filing: 1900-10-22
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Granted: 1901-04-23
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Expires: 1920-10-22
Abstract
No abstract record available.
Inventors
- 👤 Samuel Walker Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:58
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; G05D16/103; G05D16/106; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7808
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) | 1904-04-22 | 1904-10-22 | 1905-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-04-22 | 1908-10-22 | 1909-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-04-22 | 1912-10-22 | 1913-04-23 | $7700.00 | Window Closed / Lapsed |