Patent CA1063533A successfully refreshed from Google Patents.
Patent US3531171A successfully refreshed from Google Patents.
US3531171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical mechanical filing cabinet
Assignee: HNI Corp
•
Filing: 1968-07-05
•
Granted: 1970-09-29
•
Expires: 1988-07-05
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Raabe
- 👤 Clifford M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:02
CPC Classifications
A; A47; A47B; A47B63/00; A47B63/06; A47B63/067
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |