Patent US2384444A successfully refreshed from Google Patents.
US2384444A
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Method of forming counterbored receptacles
Assignee: Borg Warner Corp
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Filing: 1942-06-19
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Granted: 1945-09-11
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Expires: 1962-06-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Donald H Cravener
- 👤 Roy C Ingersoll
- 👤 Frans B Wendel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:21
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/04; F; F16; F16C; F16C33/00; F16C33/30; F16C33/58; F16C33/64; F16C21/00; F16C21/005; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49679; Y10T29/49689
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) | 1948-09-10 | 1949-03-12 | 1949-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-09-10 | 1953-03-12 | 1953-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-09-10 | 1957-03-12 | 1957-09-11 | $7700.00 | Window Closed / Lapsed |