US2438630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toolholder
Assignee: Individual
•
Filing: 1944-05-25
•
Granted: 1948-03-30
•
Expires: 1964-05-25
Abstract
No abstract record available.
Inventors
- 👤 Barks William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:48
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/08; B23B2260/00; B23B2260/088; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2222; Y10T407/2224; Y10T407/2252; Y10T407/226; Y10T407/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
SE145738C1
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US150276A
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US534513A
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SE56644C1
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US639428A
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US684465A
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US717601A
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US973052A
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US1255620A
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US1299125A
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US1380317A
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US1584347A
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US2306798A
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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) | 1951-03-30 | 1951-09-29 | 1952-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-30 | 1955-09-29 | 1956-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-30 | 1959-09-29 | 1960-03-30 | $7700.00 | Window Closed / Lapsed |