US2886687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated appliances and method of their manufacture
Assignee: Siemens Schuckertwerke AG
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Filing: 1956-11-28
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Granted: 1959-05-12
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Expires: 1976-11-28
Abstract
No abstract record available.
Inventors
- 👤 Kurnatowski Hans Von
- 👤 Reitzenstein Rudolf
- 👤 Schwank Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:14
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/68; H05B3/688
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
60 words
IN AN APPARATUS IN THE OPERATION OF WHICH FERROUS PARTS ARE SUBJECTED TO INCANDESCENT TEMPERATURES, THE IMPROVEMENT COMPRISING A SOLDERED JUNCTION FOR SAID PARTS, THE JUNCTION COMPRISING IRON AND CARBON, THERE BEING A CARBON CONTENT GRADIENT BETWEEN THE JUNCTION AND SAID PARTS, THE CARBON CONTENT OF THE JUNCTION BEING BETWEEN ABOUT 0.5% TO 4.5% BASED UPON TOTAL CONTENT, IN SAID
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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |