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US2817068A
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Assignee: THERMAL Manufacturing Co
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Filing: 1956-09-13
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Granted: 1957-12-17
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Expires: 1976-09-13
Abstract
No abstract record available.
Inventors
- 👤 Russell L Schwing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:33
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/14; H01C1/146; H01F; H01F5/00; H01F5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1759184A
Cited
US1830084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |