US641580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flue or pipe coupling.
Assignee: Individual
•
Filing: 1899-04-24
•
Granted: 1900-01-16
•
Expires: 1919-04-24
Abstract
No abstract record available.
Inventors
- 👤 Michael Cummins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:45
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/12; F16L23/14; F16L13/00; F16L13/14; F16L13/146; F24; F24F; F24F13/00; F24F13/02; F24F13/0209; Y; Y10; Y10S; Y10S138/00; Y10S138/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1903-01-16 | 1903-07-18 | 1904-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-01-16 | 1907-07-18 | 1908-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-01-16 | 1911-07-18 | 1912-01-17 | $7700.00 | Window Closed / Lapsed |