US2666253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making spring assemblages
Assignee: AT&T Inc
•
Filing: 1951-10-04
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Granted: 1954-01-19
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Expires: 1971-10-04
Abstract
No abstract record available.
Inventors
- 👤 Ivar A Morberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:38
CPC Classifications
H; H01; H01H; H01H63/00; H01H63/02; H01H63/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49208; Y10T29/49222; Y10T29/49787; Y10T29/49789; Y10T29/49798; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49922
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US462500A
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US1287101A
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US2202883A
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US2401319A
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US2373500A
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US2534867A
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US2610390A
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US2587634A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |