US2785278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for electrically heated devices
Assignee: Individual
•
Filing: 1955-05-23
•
Granted: 1957-03-12
•
Expires: 1975-05-23
Abstract
No abstract record available.
Inventors
- 👤 Stuart R Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:37
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1232458A
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US1916669A
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US2254687A
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US2140479A
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US2273375A
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US2271485A
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US2422974A
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US2622186A
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US2656441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |