Patent US2490593A successfully refreshed from Google Patents.
US2490593A
Expired / Lapsed
US
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Combined portable welding and pneumatic tool
Assignee: Individual
•
Filing: 1945-02-07
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Granted: 1949-12-06
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Expires: 1965-02-07
Abstract
No abstract record available.
Inventors
- 👤 Elten M Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:45
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17487; Y10T279/17521
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US516574A
Cited
US1309696A
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US633852A
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US1499157A
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US1984809A
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US2361918A
Cited
US2367257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |