Patent US2517694A successfully refreshed from Google Patents.
US62699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in stove-pipe deums
Assignee: —
•
Filing: —
•
Granted: 1867-03-05
•
Expires: 1884-03-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:07
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/001; Y; Y10; Y10S; Y10S165/00; Y10S165/092; Y10S165/123; Y10S165/124; Y10S165/125
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) | 1870-03-04 | 1870-09-03 | 1871-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1874-03-04 | 1874-09-03 | 1875-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1878-03-04 | 1878-09-03 | 1879-03-05 | $7700.00 | Window Closed / Lapsed |