US3402297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical distribution network
Assignee: International Business Machines Corp
•
Filing: 1965-05-10
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Granted: 1968-09-17
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Expires: 1985-05-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:50
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; B; B65; B65B; B65B57/00; B65B57/02; B65B57/04; B65B7/00; B65B7/16; B65B7/20; G; G02; G02F; G02F1/00; G02F1/29; G02F1/31; H04B; H04B10/00; H04B3/00; H04B3/02; H04B3/36; H04B3/38; H04J; H04J14/00; H04J14/08
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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |