Patent US609872A successfully refreshed from Google Patents.
US609872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Douglas m
Assignee: —
•
Filing: —
•
Granted: 1898-08-30
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Expires: 1915-08-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:27
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/02; F16L33/14; Y; Y10; Y10S; Y10S24/00; Y10S24/909; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1416
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) | 1901-08-30 | 1902-03-01 | 1902-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1905-08-30 | 1906-03-01 | 1906-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1909-08-30 | 1910-03-01 | 1910-08-31 | $7700.00 | Window Closed / Lapsed |