Patent US781722A successfully refreshed from Google Patents.
US781722A
Expired / Lapsed
US
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Spark arrester, extinguisher, and discharger.
Assignee: WILLIAM F WOCHER
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Filing: 1904-03-02
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Granted: 1905-02-07
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Expires: 1924-03-02
Abstract
No abstract record available.
Inventors
- 👤 John W Heaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:56
CPC Classifications
F; F23; F23K; F23K3/00; F23K3/02; Y; Y10; Y10S; Y10S16/00; Y10S16/38; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/8593; Y10T137/87917; Y10T137/87981
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) | 1908-02-07 | 1908-08-08 | 1909-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-02-07 | 1912-08-08 | 1913-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-02-07 | 1916-08-08 | 1917-02-07 | $7700.00 | Window Closed / Lapsed |