US2972096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection of a temperature sensitive device
Assignee: AO Smith Corp
•
Filing: 1957-11-26
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Granted: 1961-02-14
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Expires: 1977-11-26
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:25
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/47; H02; H02H; H02H7/00; H02H7/10; H02H7/12; H02H7/125; H02H7/1257
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) | 1964-02-14 | 1964-08-15 | 1965-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-14 | 1968-08-15 | 1969-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-14 | 1972-08-15 | 1973-02-14 | $7700.00 | Window Closed / Lapsed |