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US2470716A
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Electronic counting system
Assignee: Research Corp
•
Filing: 1943-06-11
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Granted: 1949-05-17
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Expires: 1963-06-11
Abstract
No abstract record available.
Inventors
- 👤 Wilcox P Overbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:01
CPC Classifications
H; H03; H03K; H03K21/00; H03K21/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE214631C
Cited
US1932589A
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US2053156A
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US2293177A
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US2310105A
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US2306386A
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US2329792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |