US2520126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible shaft
Assignee: Fort James Corp
•
Filing: 1948-01-30
•
Granted: 1950-08-29
•
Expires: 1968-01-30
Abstract
No abstract record available.
Inventors
- 👤 Lewis L Collard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:05
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/243; B65H75/2437; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1021; Y10T279/1024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US749114A
Cited
GB189608543A
Cited
US1225929A
Cited
US1492291A
Cited
US2145806A
Cited
US2289519A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |