Patent US2720219A successfully refreshed from Google Patents.
US636465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1899-07-27
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Granted: 1899-11-07
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Expires: 1919-07-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick L Sowle
- 👤 Roland C Hilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:17
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/20; Y; Y10; Y10T; Y10T137/00; Y10T137/3584; Y10T137/8593; Y10T137/87917; Y10T137/88046
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) | 1902-11-07 | 1903-05-09 | 1903-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-11-07 | 1907-05-09 | 1907-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-11-07 | 1911-05-09 | 1911-11-08 | $7700.00 | Window Closed / Lapsed |