Patent US3936722A successfully refreshed from Google Patents.
Patent US3479620A successfully refreshed from Google Patents.
US3479620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser with serially coupled mode selecting resonator sections
Assignee: AT&T Inc
•
Filing: 1966-03-16
•
Granted: 1969-11-18
•
Expires: 1986-03-16
Abstract
No abstract record available.
Inventors
- 👤 William W Rigrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:38
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/08018; H01S3/08022; H01S3/08031; H01S3/081; H01S3/082; H01S3/083; H01S3/06; H01S3/07
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |