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US632490A
Expired / Lapsed
US
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Valve for air-compressors.
Assignee: Individual
•
Filing: 1898-07-11
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Granted: 1899-09-05
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Expires: 1918-07-11
Abstract
No abstract record available.
Inventors
- 👤 James Hemphill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:08
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0433; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/785; Y10T137/7852; Y10T137/7853; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7932
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) | 1902-09-05 | 1903-03-07 | 1903-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-09-05 | 1907-03-07 | 1907-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-09-05 | 1911-03-07 | 1911-09-06 | $7700.00 | Window Closed / Lapsed |