US2664489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical heating system
Assignee: Bendix Aviation Corp
•
Filing: 1950-10-09
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Granted: 1953-12-29
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Expires: 1970-10-09
Abstract
No abstract record available.
Inventors
- 👤 John W Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:28
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/2451; G05D23/2453
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1694264A
Cited
GB372654A
Cited
US2056769A
Cited
US2103513A
Cited
US2217797A
Cited
US2552480A
Cited
US2467856A
Cited
US2455387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |