US2729459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced rotary chuck
Assignee: Gisholt Machine Co
•
Filing: 1950-11-03
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Granted: 1956-01-03
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Expires: 1970-11-03
Abstract
No abstract record available.
Inventors
- 👤 Leifer Lorenz Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:03
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/0032; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/14; B23B31/141; B23B31/142; B23B31/16; B23B31/16195; B23B31/162; B23B31/16208; B23B2250/00; B23B2250/12; Y; Y10; Y10T; Y10T279/00; Y10T279/19; Y10T279/1961; Y10T279/24; Y10T279/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2422785A
Cited
FR364463A
Cited
FR481505A
Cited
US1906410A
Cited
US1990525A
Cited
US2225377A
Cited
US2518934A
Cited
US2479973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |