Patent US623982A successfully refreshed from Google Patents.
US623982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasket for steam-boilers and coupling therefor
Assignee: —
•
Filing: —
•
Granted: 1899-05-02
•
Expires: 1916-05-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:17
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142
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) | 1902-05-02 | 1902-11-01 | 1903-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-05-02 | 1906-11-01 | 1907-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-05-02 | 1910-11-01 | 1911-05-03 | $7700.00 | Window Closed / Lapsed |