US3523208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: AT&T Inc
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Filing: 1968-05-27
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Granted: 1970-08-04
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Expires: 1988-05-27
Abstract
No abstract record available.
Inventors
- 👤 Max G Bodmer
- 👤 Merton H Crowell
- 👤 Eugene I Gordon
- 👤 Francis J Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:25
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/107; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/451; H01J29/453; H01J29/455; H10D; H10D99/00; H10W; H10W74/00; H10W74/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3419746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |