US2648167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for manufacturing switches
Assignee: AT&T Inc
•
Filing: 1948-12-18
•
Granted: 1953-08-11
•
Expires: 1968-12-18
Abstract
No abstract record available.
Inventors
- 👤 Walter B Ellwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/005; Y; Y10; Y10S; Y10S65/00; Y10S65/12; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49105; Y10T29/53; Y10T29/5313; Y10T29/532; Y10T29/53248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2279168A
Cited
US2264746A
Cited
US2406021A
Cited
US2406008A
Cited
US2332338A
Cited
US2392099A
Cited
US2486101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |