US2501036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill jig
Assignee: Northrop Grumman Corp
•
Filing: 1945-06-11
•
Granted: 1950-03-21
•
Expires: 1965-06-11
Abstract
No abstract record available.
Inventors
- 👤 Robert A Fay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
B; B23; B23B; B23B47/00; B23B47/28; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/567
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US153102A
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US751763A
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US108890A
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US681375A
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US688310A
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US741364A
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US889273A
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US853468A
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US901152A
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US948523A
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US1758959A
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US1920839A
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US2333134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |