US809839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam-generator.
Assignee: GORHAM LYLE OLDS
•
Filing: 1903-07-20
•
Granted: 1906-01-09
•
Expires: 1923-07-20
Abstract
No abstract record available.
Inventors
- 👤 John William Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:37
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/28; F22B1/287
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) | 1909-01-08 | 1909-07-10 | 1910-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-01-08 | 1913-07-10 | 1914-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-01-08 | 1917-07-10 | 1918-01-09 | $7700.00 | Window Closed / Lapsed |