Patent US3500536A successfully refreshed from Google Patents.
US3500536A
Expired / Lapsed
US
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Process for finishing solder joints on a circuit board
Assignee: Unisys Corp
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Filing: 1966-11-17
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Granted: 1970-03-17
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Expires: 1986-11-17
Abstract
No abstract record available.
Inventors
- 👤 Sandor Goldschmied
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:37
CPC Classifications
H; H05; H05K; H05K13/00; H05K13/04; B; B23; B23K; B23K3/00; B23K3/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49107; Y10T29/49117; Y10T29/49124; Y10T29/4913
Claims Analysis
Total Claims: 0
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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) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |