Patent US4570739B1 successfully refreshed from Google Patents.
US4570739B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Personal mobility vehicle
Assignee: BURKE Inc MISSION KN A KN CORP
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Filing: 1983-09-29
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Granted: 1994-04-19
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Expires: 2003-09-29
Abstract
No abstract record available.
Inventors
- 👤 Duwayne E Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:55
CPC Classifications
B; B62; B62K; B62K5/00; B62K5/02; B62K5/023; B62K5/025; B62D; B62D61/00; B62D61/06; B62D61/08; Y; Y10; Y10S; Y10S180/00; Y10S180/907; Y10S280/00; Y10S280/05
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) | 1997-04-18 | 1997-10-18 | 1998-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-18 | 2001-10-18 | 2002-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-18 | 2005-10-18 | 2006-04-19 | $7700.00 | Window Closed / Lapsed |