US2483839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electric heaters
Assignee: HOTPOINT Inc
•
Filing: 1945-12-11
•
Granted: 1949-10-04
•
Expires: 1965-12-11
Abstract
No abstract record available.
Inventors
- 👤 Sterling A Oakley
- 👤 Rufus T Staudt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:46
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49089
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US786257A
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US1225368A
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US1147789A
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US1157916A
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US1767586A
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US2063826A
Cited
GB422893A
Cited
US2158600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-03 | 1953-04-04 | 1953-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-03 | 1957-04-04 | 1957-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-03 | 1961-04-04 | 1961-10-04 | $7700.00 | Window Closed / Lapsed |