US2856682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making silver lined steel structure
Assignee: AO Smith Corp
•
Filing: 1953-10-16
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Granted: 1958-10-21
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Expires: 1973-10-16
Abstract
No abstract record available.
Inventors
- 👤 John J Chyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:12
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/001; B23K35/004; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12896; Y10T428/12951; Y10T428/12958
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A METHOD OF BONDING SILVER TO CARBON STEEL, COMPRISING WELDING A LAYER OF STAINLESS STEEL TO A SURFACE OF SAID CARBON STEEL, SAID STAINLESS STEEL HAVING A NICKEL CONTENT OF LESS THAN 25% BY WEIGHT OF SAID STAINLESS STEEL, AND THEREAFTER ARC WELDING A LAYER OF SILVER TO SAID STAINLESS STEEL TO PROVIDE A STRUCTURE FREE OF INTERGRANULAR CRACKING.
Claim 2
Independent Claim
59 words
A METHOD OF BONDING SILVER TO CARBON STEEL, COMPRISING WELDING A LAYER OF STAINLESS STEEL TO A SURFACE OF SAID CARBON STEEL, SAID STAINLESS STEEL HAVING A NICKEL CONTENT OF LESS THAN 25% BY WEIGHT OF SAID STAINLESS STEEL, AND THEREAFTER ARC WELDING A LAYER OF SILVER TO SAID STAINLESS STEEL TO PROVIDE A STRUCTURE FREE OF INTERGRANULAR CRACKING.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |