US2775726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for registering pulses
Assignee: Hartford National Bank and Trust Co
•
Filing: 1951-11-01
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Granted: 1956-12-25
•
Expires: 1971-11-01
Abstract
No abstract record available.
Inventors
- 👤 Kroes Jan Louis De
- 👤 Heetman Alphonsus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:45
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/74; H04; H04Q; H04Q3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2397604A
Cited
US2444042A
Cited
US2389275A
Cited
US2417831A
Cited
US2549769A
Cited
US2561073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |