US2584573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for house heating
Assignee: Individual
•
Filing: 1950-01-31
•
Granted: 1952-02-05
•
Expires: 1970-01-31
Abstract
No abstract record available.
Inventors
- 👤 Frazer W Gay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:49
CPC Classifications
F; F24; F24D; F24D11/00; F24D11/02; F24D11/0214; F24D11/0221; F24V; F24V50/00; F25; F25B; F25B29/00; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02B10/70; Y10; Y10S; Y10S159/00; Y10S159/902; Y10S159/903
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1683434A
Cited
US1874803A
Cited
US1969187A
Cited
US2283206A
Cited
US2396338A
Cited
US2428876A
Cited
US2513373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |