US3549950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit board holder
Assignee: National Metalcrafters Inc
•
Filing: 1969-02-10
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Granted: 1970-12-22
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Expires: 1989-02-10
Abstract
No abstract record available.
Inventors
- 👤 William L Shelden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:30
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/14; H05K7/1422; H05K7/1424; H05K7/1425
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |