US3501223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical pulse generator
Assignee: AT&T Inc
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Filing: 1965-11-23
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Granted: 1970-03-17
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Expires: 1985-11-23
Abstract
No abstract record available.
Inventors
- 👤 Alois J Rack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:51
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/02; B23K26/06; B23K26/067; B23K26/0673; H; H01; H01S; H01S3/00; H01S3/10; H01S3/101; H03; H03K; H03K3/00; H03K3/02; H03K3/42; H04; H04B; H04B10/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |