US2782289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating device
Assignee: Individual
•
Filing: 1954-05-13
•
Granted: 1957-02-19
•
Expires: 1974-05-13
Abstract
No abstract record available.
Inventors
- 👤 Nathanson Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:03
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; H; H05; H05B; H05B3/00; H05B3/10; H05B3/16; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1142393A
Cited
US1696684A
Cited
US2100326A
Cited
US2467349A
Cited
GB604766A
Cited
US2559077A
Cited
US2674683A
Cited
US2617916A
Cited
US2719907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |