US2922323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic high speed deep hole drilling machine
Assignee: Air Products Inc
•
Filing: 1953-06-18
•
Granted: 1960-01-26
•
Expires: 1973-06-18
Abstract
No abstract record available.
Inventors
- 👤 Clarence B Weidner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:35
CPC Classifications
B; B23; B23B; B23B41/00; B23B41/02; Y; Y10; Y10T; Y10T408/00; Y10T408/23; Y10T408/65; Y10T408/675; Y10T408/6757
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US599356A
Cited
US1317711A
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US897676A
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US1911138A
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US2165485A
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US2324727A
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US2420521A
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US2488620A
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US2490120A
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US2552463A
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US2515383A
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US2657595A
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US2631480A
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US2807176A
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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) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |