US804590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler-tube fastener.
Assignee: Individual
•
Filing: 1905-03-06
•
Granted: 1905-11-14
•
Expires: 1925-03-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur Jimason Ervin
- 👤 James Raymond Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:23
CPC Classifications
F; F16; F16L; F16L51/00
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 |