US2358741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic flat - bottom countersinking attachment for milling machines
Assignee: Individual
•
Filing: 1942-09-11
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Granted: 1944-09-19
•
Expires: 1962-09-11
Abstract
No abstract record available.
Inventors
- 👤 Shelby Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:56
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03432; B23B29/03435; B23B29/03439; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8598; Y10T409/00; Y10T409/30; Y10T409/309352; Y10T409/309408; Y10T82/00; Y10T82/12; Y10T82/25; Y10T82/2522; Y10T82/2529; Y10T82/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-09-19 | 1948-03-20 | 1948-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-09-19 | 1952-03-20 | 1952-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-09-19 | 1956-03-20 | 1956-09-19 | $7700.00 | Window Closed / Lapsed |