US2452988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work indexing attachment for lathes
Assignee: Individual
•
Filing: 1947-02-20
•
Granted: 1948-11-02
•
Expires: 1967-02-20
Abstract
No abstract record available.
Inventors
- 👤 John D Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:42
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q16/02; B23Q16/04; B24; B24B; B24B41/00; B24B41/06; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30868; Y10T409/308792
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US341437A
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US359377A
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US614247A
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US1056419A
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US1167612A
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US1230111A
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US2001955A
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US1981174A
Cited
US2341099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |