Patent US4326792A successfully refreshed from Google Patents.
Patent US2362053A successfully refreshed from Google Patents.
US2362053A
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Quick-change structure for boring bars
Assignee: Individual
•
Filing: 1943-03-04
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Granted: 1944-11-07
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Expires: 1963-03-04
Abstract
No abstract record available.
Inventors
- 👤 Ephraim R Danielson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:37
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/107; B23B31/1075; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17821; Y10T408/00; Y10T408/89; Y10T408/909; Y10T408/9098; Y10T408/90993; Y10T82/00; Y10T82/25; Y10T82/2585; Y10T82/2591
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) | 1947-11-07 | 1948-05-08 | 1948-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-11-07 | 1952-05-08 | 1952-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-11-07 | 1956-05-08 | 1956-11-07 | $7700.00 | Window Closed / Lapsed |