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US2886239A
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Assignee: WILLEM HENDRIK THEODORUS HELMI
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Filing: 1954-02-16
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Granted: 1959-05-12
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Expires: 1974-02-16
Abstract
No abstract record available.
Inventors
- 👤 Reumerman Theodorus
- 👤 Cornelis A S Hamelink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:48
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/08; G06F11/10; G06F11/1008; G06F11/1012; G06F11/104; H; H03; H03K; H03K23/00; H03K23/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2375332A
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US2364540A
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US2658681A
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US2623115A
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US2634052A
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US2759669A
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US2749440A
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US2776091A
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US2718633A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |