US2623431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thumbtack constructed to permit stacking
Assignee: Individual
•
Filing: 1949-10-22
•
Granted: 1952-12-30
•
Expires: 1969-10-22
Abstract
No abstract record available.
Inventors
- 👤 Scheurmann Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:50
CPC Classifications
B; B43; B43M; B43M15/00; Y; Y10; Y10S; Y10S411/00; Y10S411/921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB355518A
Cited
US2083238A
Cited
US2128640A
Cited
US2131347A
Cited
US2327554A
Cited
US2495238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |