US2932880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electrical switching devices
Assignee: AT&T Inc
•
Filing: 1955-02-24
•
Granted: 1960-04-19
•
Expires: 1975-02-24
Abstract
No abstract record available.
Inventors
- 👤 John S Gellatly
- 👤 Charles F Triteline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:47
CPC Classifications
H; H01; H01H; H01H63/00; H01H63/02; H01H63/04; H01H11/00; H01H11/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49208; Y10T29/4921; Y10T29/49211; Y10T29/49213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2127648A
Cited
US2116269A
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US2360063A
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US2379641A
Cited
US2458552A
Cited
US2571040A
Cited
US2746131A
Cited
US2699597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |