US3510986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-closing hinged doors and hinges therefor
Assignee: Kason Industries Inc
•
Filing: 1968-10-01
•
Granted: 1970-05-12
•
Expires: 1988-10-01
Abstract
No abstract record available.
Inventors
- 👤 Irving L Berkowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:04
CPC Classifications
E; E05; E05D; E05D7/00; E05D7/08; E05D7/081; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/12; E05F1/1207; E05F1/1215; E05Y; E05Y2900/00; E05Y2900/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US996413A
Cited
US1105852A
Cited
US3331159A
Cited
US3395423A
Cited
US3398487A
Cited
US3378954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |