US3538389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subelement for electronic circuit board
Assignee: DONALD E HARPER
•
Filing: 1969-02-24
•
Granted: 1970-11-03
•
Expires: 1989-02-24
Abstract
No abstract record available.
Inventors
- 👤 Norman R Levesque
- 👤 Donald E Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:49
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/0286; H05K1/0287; H05K1/14; H05K1/142; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/0929; H05K2201/09354; H05K2201/09818; H05K2201/09972; H05K2201/10; H05K2201/10227; H05K2201/10287; H05K2201/10613; H05K2201/10621; H05K2201/10689; H05K3/00; H05K3/0058; H05K3/0064; H05K3/22; H05K3/222; H05K3/38; H05K3/386
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3456335A
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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) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |