US1469727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic switching device for electric irons
Assignee: HIMSELF
•
Filing: 1922-03-14
•
Granted: 1923-10-02
•
Expires: 1942-03-14
Abstract
No abstract record available.
Inventors
- 👤 Jermin Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:14
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-10-01 | 1927-04-02 | 1927-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-10-01 | 1931-04-02 | 1931-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-10-01 | 1935-04-02 | 1935-10-02 | $7700.00 | Window Closed / Lapsed |