Patent US804505A successfully refreshed from Google Patents.
US804505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas reversing-valve.
Assignee: Individual
•
Filing: 1904-11-10
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Granted: 1905-11-14
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Expires: 1924-11-10
Abstract
No abstract record available.
Inventors
- 👤 Hermann E Schild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:25
CPC Classifications
F; F23; F23L; F23L15/00; F23L15/02; Y; Y02; Y02E; Y02E20/00; Y02E20/34; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4621; Y10T137/4628; Y10T137/4636; Y10T137/5544; Y10T137/5617; Y10T137/5689
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) | 1908-11-13 | 1909-05-15 | 1909-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-11-13 | 1913-05-15 | 1913-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-11-13 | 1917-05-15 | 1917-11-14 | $7700.00 | Window Closed / Lapsed |