US2749419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for welding contacts onto switch parts
Assignee: AT&T Inc
•
Filing: 1953-04-07
•
Granted: 1956-06-05
•
Expires: 1973-04-07
Abstract
No abstract record available.
Inventors
- 👤 William Larsen Einer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:53
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/04; H01H11/041; H01H11/043; H01H49/00; H01Q; H01Q1/00; H01Q1/08; H01Q1/081; H01Q1/082; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US395211A
Cited
US967327A
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US2024597A
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US2129845A
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US2197058A
Cited
US2283629A
Cited
US2477894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |