US2599171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heating switch
Assignee: Edwin L Wiegand Co
•
Filing: 1949-06-24
•
Granted: 1952-06-03
•
Expires: 1969-06-24
Abstract
No abstract record available.
Inventors
- 👤 Hadley F Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:33
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0225; H01; H01H; H01H43/00; H01H43/10; H01H43/12; H01H43/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US414714A
Cited
US2194587A
Cited
GB516349A
Cited
US2294573A
Cited
US2275918A
Cited
US2329417A
Cited
US2394399A
Cited
US2503082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |