US3471753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor mounting chip assembly
Assignee: Sprague Electric Co
•
Filing: 1967-03-01
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Granted: 1969-10-07
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Expires: 1987-03-01
Abstract
No abstract record available.
Inventors
- 👤 Darnall P Burks
- 👤 John H Fabricius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:09
CPC Classifications
H; H10; H10W; H10W99/00; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/341; H05K3/3431; H05K3/3442; H10W70/00; H10W70/60; H10W70/62; H10W70/65; H10W70/657; H10W90/00; H05K1/00; H05K1/18; H05K1/182; H05K2201/00; H05K2201/09; H05K2201/09145; H05K2201/09181; H05K2201/09209; H05K2201/09372; H05K2201/09381; H05K2201/10; H05K2201/10007; H05K2201/10166; H05K2201/10431; H05K2201/10439; H05K2201/10477; H05K2201/10613; H05K2201/10621; H05K2201/10727; H10W72/00; H10W72/50; H10W72/551; H10W72/552; H10W74/00; Y; Y02; Y02P; Y02P70/00; Y02P70/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49126; Y10T29/4913; Y10T29/49144; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12549
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3302067A
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FR1099888A
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US3021461A
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US2971138A
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GB932210A
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US3254274A
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FR1446305A
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US3231797A
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US3331125A
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US3349481A
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US3271507A
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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) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |