Patent US2983987A successfully refreshed from Google Patents.
US2983987A
Expired / Lapsed
US
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Method of forming articles
Assignee: AT&T Inc
•
Filing: 1958-06-30
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Granted: 1961-05-16
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Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Richard C Shafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:51
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0438; H10W; H10W99/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169; Y10T29/51; Y10T29/5191
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2897587A
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US2847623A
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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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |