Patent US2070898A successfully refreshed from Google Patents.
US2070898A
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Centering and compensating chuck
Assignee: HALL PLANETARY Co
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Filing: 1935-12-03
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Granted: 1937-02-16
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Expires: 1955-12-03
Abstract
No abstract record available.
Inventors
- 👤 William P-G Hall
- 👤 Peter P-G Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:06
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/1207; B23B31/1215; B23B31/1253; Y; Y10; Y10S; Y10S470/00; Y10S470/90; Y10T; Y10T279/00; Y10T279/12; Y10T279/1274; Y10T279/1291; Y10T279/25; Y10T279/26; Y10T409/00; Y10T409/30; Y10T409/300056
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) | 1940-02-16 | 1940-08-17 | 1941-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-02-16 | 1944-08-17 | 1945-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-02-16 | 1948-08-17 | 1949-02-16 | $7700.00 | Window Closed / Lapsed |