Patent US2671844A successfully refreshed from Google Patents.
US2671844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tin solder
Assignee: Individual
•
Filing: 1951-07-26
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Granted: 1954-03-09
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Expires: 1971-07-26
Abstract
No abstract record available.
Inventors
- 👤 Guenther W Laubmeyer
- 👤 Marius E Smits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:21
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; B23K35/262
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
IN THE MANUFACTURE OF FINE MECHANICAL INSTRUMENTS, SUCH AS RADIO EQUIPMENT, METERING DEVICES, AND HEARING ACIDS, COMPRISING A LARGE NUMBER OF SMALL SOLDERED JOINTS FOR ELECTRICAL CONNECTIONS, THE METHOD OF MAKING SAID SOLDERED JOINTS BY USING IN COMBINATION AN ELECTRICALLY HEATED SOLDERING TOOL PROVIDED WITH A SOLDERING BIT COMPRISING COPPER AND A SOLDER OF THE THIN LEAD TYPE, SAID SOLDER COMPRISING COPPER, BESIDES THE BODY ALLOY IN AN AMOUNT SUFFICIENT TO FORM THE SN-CU EUTECTIC.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |