Patent US813209A successfully refreshed from Google Patents.
US813209A
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Steam hydraulic intensifier.
Assignee: DAVY BROTHERS Ltd
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Filing: 1905-03-08
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Granted: 1906-02-20
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Expires: 1925-03-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas Edmund Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:25
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/16
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) | 1909-02-19 | 1909-08-21 | 1910-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-02-19 | 1913-08-21 | 1914-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-02-19 | 1917-08-21 | 1918-02-20 | $7700.00 | Window Closed / Lapsed |