US2488998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor-driven filing mechanism
Assignee: Individual
•
Filing: 1945-09-04
•
Granted: 1949-11-22
•
Expires: 1965-09-04
Abstract
No abstract record available.
Inventors
- 👤 Turkowski Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:25
CPC Classifications
B; B23; B23D; B23D67/00; Y; Y10; Y10T; Y10T29/00; Y10T29/44; Y10T29/446
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US739496A
Cited
US1035524A
Cited
US1406071A
Cited
US1636729A
Cited
US1808228A
Cited
US2122611A
Cited
US2282648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |