US3480823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed discharge device
Assignee: Philips North America LLC
•
Filing: 1966-08-12
•
Granted: 1969-11-25
•
Expires: 1986-08-12
Abstract
No abstract record available.
Inventors
- 👤 Cheng-Lin Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:12
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/025; C04B37/003; C04B37/005; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2235/658; C04B2235/6581; C04B2235/70; C04B2235/74; C04B2235/76; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/06; C04B2237/064; C04B2237/09; C04B2237/12; C04B2237/122; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/50; C04B2237/52; C04B2237/59; C04B2237/592; C04B2237/62; C04B2237/74; C04B2237/76; C04B2237/765; C04B2237/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2857663A
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US3189677A
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US3243635A
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FR1351331A
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US3376121A
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US3385463A
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US3324543A
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US3363134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |