Patent US3726668A successfully refreshed from Google Patents.
US3726668A
Expired / Lapsed
US
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Welding filling material
Assignee: Gebrueder Boehler and Co AG
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Filing: 1970-11-30
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Granted: 1973-04-10
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Expires: 1990-11-30
Abstract
Abstract THE FILLER MATERIAL COMPRISES METALLIC CONSTITUENTS AND CARBON AND IS OF 0.001-0.2% CARBON, 0.1-5.0% SILICON, 0.25-10.0% MANGANESE, 15.0-25.0% CHROMIUM, 3.56.0% MOLYBDENUM, 8.0-30.0% NICKEL, 0.01-3.0% COPPER, 0.1-0.35% NITROGEN, RELATED TO THE TOTAL WEIGHT OF THE METALLIC CONSTITUENTS AND CARBON, BALANCE IRON AND INEVITABLE IMPURITIES.
Inventors
- 👤 A Baeumel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:49
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/308; B23K35/3086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |