US645611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiator.
Assignee: WILLIAM H H SLACK
•
Filing: 1899-02-25
•
Granted: 1900-03-20
•
Expires: 1919-02-25
Abstract
No abstract record available.
Inventors
- 👤 Oscar E Wait
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:22
CPC Classifications
F; F28; F28G; F28G1/00; F28G1/12; Y; Y10; Y10S; Y10S165/00; Y10S165/901
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) | 1903-03-20 | 1903-09-19 | 1904-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-03-20 | 1907-09-19 | 1908-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-03-20 | 1911-09-19 | 1912-03-20 | $7700.00 | Window Closed / Lapsed |