US2967229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Percussion-welding electrodes
Assignee: AT&T Inc
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Filing: 1958-10-24
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Granted: 1961-01-03
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Expires: 1978-10-24
Abstract
No abstract record available.
Inventors
- 👤 Steve F Chuma
- 👤 Richard C Steen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:37
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |