US2425308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single spindle automatic machine
Assignee: Devlieg Bullard Inc
•
Filing: 1939-11-14
•
Granted: 1947-08-12
•
Expires: 1959-11-14
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Drissner
- 👤 Kenneth W Barkinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:44
CPC Classifications
B; B23; B23B; B23B7/00; B23B7/02; B23B7/04; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5152; Y10T29/5154; Y10T29/5157; Y10T29/5158
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1604116A
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US2118021A
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US2027568A
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US1924594A
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US2118024A
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US2053748A
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US2103342A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |