Patent US3409732A successfully refreshed from Google Patents.
US3409732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stacked printed circuit board
Assignee: Electro Mechanisms Inc
•
Filing: 1966-04-07
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Granted: 1968-11-05
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Expires: 1986-04-07
Abstract
No abstract record available.
Inventors
- 👤 Victor F Dahlgren
- 👤 Sidney K Tally
- 👤 Thomas H Stearns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:53
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/46; H05K3/4688; H05K3/4691; H05K1/00; H05K1/02; H05K1/11; H05K1/118; H05K2201/00; H05K2201/09; H05K2201/09009; H05K2201/09109; H05K2201/10; H05K2201/10227; H05K2201/10401; H05K3/40; H05K3/4038; H05K3/4046; H05K3/4611
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3202869A
Cited
US3264524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |