US3445230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocopying system based on photosensitive metal carbonyls
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1965-04-05
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Granted: 1969-05-20
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Expires: 1985-04-05
Abstract
No abstract record available.
Inventors
- 👤 Ronald Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:20
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/182; H05K3/185; G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/735
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) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |