Patent US2841685A successfully refreshed from Google Patents.
US2841685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiators
Assignee: Individual
•
Filing: 1956-02-27
•
Granted: 1958-07-01
•
Expires: 1976-02-27
Abstract
No abstract record available.
Inventors
- 👤 Carl Z Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:37
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/002; F24H3/004
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1662935A
Cited
US1852252A
Cited
US1866221A
Cited
US1942559A
Cited
US1965218A
Cited
US2058769A
Cited
US1983437A
Cited
US2276407A
Cited
US2736790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |