US3489345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater control
Assignee: Blaw Knox Corp
•
Filing: 1967-11-13
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Granted: 1970-01-13
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Expires: 1987-11-13
Abstract
No abstract record available.
Inventors
- 👤 Colby D Moreland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:26
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/76; F24F11/77; F24F11/88; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1912; G05D23/20; G05D23/24; F24F11/30; F24F2110/00; F24F2110/10
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) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |