US2913565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated apparatus
Assignee: Kanthal AB
•
Filing: 1956-12-20
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Granted: 1959-11-17
•
Expires: 1976-12-20
Abstract
No abstract record available.
Inventors
- 👤 Kantzow Hans Gustav Albert Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:17
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/68; H05B3/74; H05B3/748
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US269744A
Cited
US739564A
Cited
US857086A
Cited
US2179934A
Cited
US2580171A
Cited
US2495788A
Cited
US2770704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |