US4453294B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engageable article using permanent magnet
Assignee: DYNAMAR CORP
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Filing: 1983-03-25
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Granted: 1996-07-23
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Expires: 2003-03-25
Abstract
No abstract record available.
Inventors
- 👤 Tamao Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:00
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/16; Y; Y10; Y10T; Y10T24/00; Y10T24/19; Y10T24/1959; Y10T24/32; Y10T24/45; Y10T24/45225; Y10T24/4588; Y10T24/45906; Y10T24/45911; Y10T292/00; Y10T292/11
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) | 1999-07-23 | 2000-01-22 | 2000-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-23 | 2004-01-22 | 2004-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-23 | 2008-01-22 | 2008-07-23 | $7700.00 | Window Closed / Lapsed |