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US42430A
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Improved gas-regulator
Assignee: —
•
Filing: —
•
Granted: 1864-04-19
•
Expires: 1881-04-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:56
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/08; F16K17/085; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836
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) | 1867-04-19 | 1867-10-19 | 1868-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1871-04-19 | 1871-10-19 | 1872-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1875-04-19 | 1875-10-19 | 1876-04-19 | $7700.00 | Window Closed / Lapsed |