Patent US3472452A successfully refreshed from Google Patents.
US3472452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic furnace control
Assignee: Individual
•
Filing: 1966-06-15
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Granted: 1969-10-14
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Expires: 1986-06-15
Abstract
No abstract record available.
Inventors
- 👤 John T Beeston Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:29
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1927; G05D23/193; G05D23/1931; G05D23/1906; G05D23/1909; G05D23/20; G05D23/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1999053A
Cited
US2144668A
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US2265512A
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US2403917A
Cited
US2804269A
Cited
US2729396A
Cited
US2777640A
Cited
US3050257A
Cited
US3216662A
Cited
US3171595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |