Patent JPS6016404A successfully refreshed from Google Patents.
US684565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-compressor valve.
Assignee: H F WHIRLOW
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Filing: 1901-04-02
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Granted: 1901-10-15
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Expires: 1921-04-02
Abstract
No abstract record available.
Inventors
- 👤 William Houghton Caster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:49
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F04B39/102; F04B39/1033; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7559; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931
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) | 1904-10-14 | 1905-04-15 | 1905-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-10-14 | 1909-04-15 | 1909-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-10-14 | 1913-04-15 | 1913-10-15 | $7700.00 | Window Closed / Lapsed |