US2440041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric flatiron
Assignee: Westinghouse Electric Corp
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Filing: 1945-03-24
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Granted: 1948-04-20
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Expires: 1965-03-24
Abstract
No abstract record available.
Inventors
- 👤 Mansfield Earl K Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:34
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/08; D; D06; D06F; D06F75/00; D06F75/08; D06F75/26; D06F75/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |