Patent US579643A successfully refreshed from Google Patents.
US579643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe-coupling
Assignee: —
•
Filing: —
•
Granted: 1897-03-30
•
Expires: 1914-03-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/02; F16L19/0212; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/046; F16L19/0206; Y; Y10; Y10S; Y10S285/00; Y10S285/91
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) | 1900-03-30 | 1900-09-29 | 1901-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1904-03-30 | 1904-09-29 | 1905-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1908-03-30 | 1908-09-29 | 1909-03-31 | $7700.00 | Window Closed / Lapsed |