US2832972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for swaging internal threads
Assignee: Individual
•
Filing: 1953-02-16
•
Granted: 1958-05-06
•
Expires: 1973-02-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:47
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AT64282B
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US1247854A
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US2181631A
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US2278962A
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US2288959A
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US2257327A
Cited
GB555608A
Cited
US2399227A
Cited
US2427756A
Cited
US2441580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |