Patent US3514538A successfully refreshed from Google Patents.
US3514538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal dissipating metal core printed circuit board
Assignee: INTERN ELECTRONICS RESEARCH CO
•
Filing: 1968-11-01
•
Granted: 1970-05-26
•
Expires: 1988-11-01
Abstract
No abstract record available.
Inventors
- 👤 Donald H Chadwick
- 👤 Ruben T Apodaca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:57
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1633; C23C18/1646; C23C18/165; C23C18/1653; C23C18/1603; C23C18/1605; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/05; H05K1/056; H05K1/09; H05K3/00; H05K3/38; H05K3/381; H05K2201/00; H05K2201/02; H05K2201/0203; H05K2201/0206; H05K2201/0209; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0338; H05K2201/0344; H05K2203/00; H05K2203/02; H05K2203/025; H05K2203/07; H05K2203/0703; H05K2203/0723; H05K2203/11; H05K2203/1105; H05K3/02; H05K3/06; H05K3/061; H05K3/062; H05K3/10; H05K3/18; H05K3/181; H05K3/40; H05K3/42; H05K3/425; H05K3/426; H05K3/44; H05K3/445; Y; Y10; Y10S; Y10S205/00; Y10S205/92
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |