US2684199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counting or number registering mechanism
Assignee: WILLEM HENDRIK THEODORUS HELMI
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Filing: 1951-02-24
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Granted: 1954-07-20
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Expires: 1971-02-24
Abstract
No abstract record available.
Inventors
- 👤 Remmer W Starreveld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:56
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/08; G06F11/10; G06F11/1008; G06F11/1012; G06F11/104; G06Q; G06Q20/00; G06Q20/08; G06Q20/10; G06Q20/14; G06Q20/30; G06Q20/305; G06Q40/00; G06Q40/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2241591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |