Patent US2501616A successfully refreshed from Google Patents.
US2501616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soldering iron tip
Assignee: Sprague Electric Co
•
Filing: 1947-04-08
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Granted: 1950-03-21
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Expires: 1967-04-08
Abstract
No abstract record available.
Inventors
- 👤 Robinson Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:46
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/02; B23K3/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A SOLDERING IRON TIP COMPRISING AN ALUMINUM BASE MEMBER WITH AN INTEGRALLY BONDED ALUMINUM OXIDE FIRLM OF THICKNESS BETWEEN ABOUT .003" AND ABOUT .0001".
Claim 2
Dependent Claim
24 words
A SOLDERING IRON TIP COMPRISING AN ALUMINUM BASE MEMBER WITH AN INTEGRALLY BONDED ALUMINUM OXIDE FIRLM OF THICKNESS BETWEEN ABOUT .003" AND ABOUT .0001".
References Cited (Backward Citations)
US736283A
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US1221566A
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US1751213A
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US1869041A
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US1938630A
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US1978112A
Cited
US2157155A
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US2356583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |