US2968340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanded metal spring structure and seat
Assignee: Wheeling Steel Corp
•
Filing: 1958-04-17
•
Granted: 1961-01-17
•
Expires: 1978-04-17
Abstract
No abstract record available.
Inventors
- 👤 Robert B Metzner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:16
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/282
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2104249A
Cited
US2242540A
Cited
US2341015A
Cited
US2400426A
Cited
US2692019A
Cited
US2678685A
Cited
US2760561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |