US3021764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic hobbing machine
Assignee: Schneider Electric Buildings Americas Inc
•
Filing: 1956-08-30
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Granted: 1962-02-20
•
Expires: 1976-08-30
Abstract
No abstract record available.
Inventors
- 👤 Iii Augustus C Durdin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 00:40
CPC Classifications
B; B23; B23F; B23F23/00; B23F23/02; B23F23/04; B23F23/12; B23F23/1218; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/100795; Y10T409/100954
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US379307A
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US1604128A
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US1933226A
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US2337696A
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US2411110A
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US2389083A
Cited
US2589475A
Cited
US2761560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |