Patent US820285A successfully refreshed from Google Patents.
US820285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-engine.
Assignee: Individual
•
Filing: 1905-02-11
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Granted: 1906-05-08
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Expires: 1925-02-11
Abstract
No abstract record available.
Inventors
- 👤 James William Cross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:34
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/12; F02B2075/125
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) | 1909-05-07 | 1909-11-06 | 1910-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-05-07 | 1913-11-06 | 1914-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-05-07 | 1917-11-06 | 1918-05-08 | $7700.00 | Window Closed / Lapsed |