US2511964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hob
Assignee: Individual
•
Filing: 1946-10-17
•
Granted: 1950-06-20
•
Expires: 1966-10-17
Abstract
No abstract record available.
Inventors
- 👤 Francis H Boor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:12
CPC Classifications
B; B23; B23F; B23F21/00; B23F21/12; B23F21/16; Y; Y10; Y10T; Y10T407/00; Y10T407/17; Y10T407/1715; Y10T407/173
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-19 | 1953-12-19 | 1954-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-19 | 1957-12-19 | 1958-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-19 | 1961-12-19 | 1962-06-20 | $7700.00 | Window Closed / Lapsed |