Patent US352968A successfully refreshed from Google Patents.
US352968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension-joint for school-desks
Assignee: —
•
Filing: —
•
Granted: 1886-11-23
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Expires: 1903-11-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:08
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0604; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32549; Y10T403/32557; Y10T403/32591
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1889-11-22 | 1890-05-24 | 1890-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1893-11-22 | 1894-05-24 | 1894-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1897-11-22 | 1898-05-24 | 1898-11-23 | $7700.00 | Window Closed / Lapsed |