Patent US674001A successfully refreshed from Google Patents.
US674001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-heater.
Assignee: Individual
•
Filing: 1900-08-02
•
Granted: 1901-05-14
•
Expires: 1920-08-02
Abstract
No abstract record available.
Inventors
- 👤 Georges Delin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:35
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/02; B05B7/04; B05B7/0416; B05B7/0441; B05B7/0475; E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; E03C1/084
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) | 1904-05-13 | 1904-11-12 | 1905-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-05-13 | 1908-11-12 | 1909-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-05-13 | 1912-11-12 | 1913-05-14 | $7700.00 | Window Closed / Lapsed |