Patent US2745935A successfully refreshed from Google Patents.
US2745935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for arc welding
Assignee: Airco Inc
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Filing: 1952-05-27
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Granted: 1956-05-15
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Expires: 1972-05-27
Abstract
No abstract record available.
Inventors
- 👤 Richard A Powley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:26
CPC Classifications
B; B23; B23K; B23K31/00; B23K31/02; B23K31/025
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
A METHOD OF SURFACING A FERROUS ARTICLE WITH ALUMINUM BRONZE HAVING A BRINNELL HARDNESS RATING OF AT LEAST 300 WHICH COMPRISES CIRCULATING A COOLING LIQUID IN DIRECT HEAT EXCHANGE RELATION WITH SAID FERROUS ARTICLE AND DEPOSITING SAID ALUMINUM BRONZE ON SAID ARTICLE BY AN INERT GAS SHIELDED METAL ARC WELDING PROCESS USING A BARE CONSUMABLE ALUMINUM BRONZE WELDING ELECTRODE WHILE SAID ARTICLE IS MAINTAINED IN DIRECT HEAT EXCHANGE RELATION WITH SAID CIRCULATING COOLING LIQUID.
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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) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |