Patent US5717199A successfully refreshed from Google Patents.
Patent US3456388A successfully refreshed from Google Patents.
US3456388A
Expired / Lapsed
US
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Balanced door hanger and closure
Assignee: Charles I. Brandin Inc
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Filing: 1966-12-06
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Granted: 1969-07-22
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Expires: 1986-12-06
Abstract
No abstract record available.
Inventors
- 👤 Rolf G Hanson
- 👤 David G Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:22
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/28; E05D15/30; E05F; E05F15/00; E05F15/50; E05F15/53; E05F3/00; E05F3/02; E05F1/00; E05F1/08; E05F1/10; E05F1/12; E05F1/1207; E05F1/1215; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
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) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |