Patent US4470936A successfully refreshed from Google Patents.
US3371372A
Expired / Lapsed
US
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Sliding door hardware
Assignee: National Manufacturing Co
•
Filing: 1966-01-12
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Granted: 1968-03-05
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Expires: 1986-01-12
Abstract
No abstract record available.
Inventors
- 👤 Banse George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:33
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/06; E05D15/0621; E05D15/0626; E05D15/063; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/638; E05Y2201/64; E05Y2600/00; E05Y2600/10; E05Y2600/20; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US990681A
Cited
US3242535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |