US3370271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Government of Netherlands
•
Filing: 1962-11-01
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Granted: 1968-02-20
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Expires: 1982-11-01
Abstract
No abstract record available.
Inventors
- 👤 Christiaan Johannes Van Dalen
- 👤 Hendrik Cornelis Anthon Duuren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/12; G06; G06V; G06V30/00; G06V30/10; G06V30/22; G06V30/224; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3069079A
Cited
US3104369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |