US3214832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of magnetically releasing clamped objects
Assignee: Individual
•
Filing: 1965-02-16
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Granted: 1965-11-02
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Expires: 1985-02-16
Abstract
No abstract record available.
Inventors
- 👤 Robert J Schwinghamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:29
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/14; F; F16; F16B; F16B31/00; F16B19/00; F16B19/04; F16B19/05; F16B2031/002; Y; Y10; Y10S; Y10S29/00; Y10S29/105; Y10T; Y10T29/00; Y10T29/49; Y10T29/49803; Y10T29/49815; Y10T29/49822; Y10T29/53
Claims Analysis
Total Claims: 0
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |