US2692344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical transducing device
Assignee: Hartford National Bank and Trust Co
•
Filing: 1952-06-21
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Granted: 1954-10-19
•
Expires: 1972-06-21
Abstract
No abstract record available.
Inventors
- 👤 Burgt Cornelis Martinus Va Der
- 👤 Klinkbamer Jacob Fredrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:33
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/62; H03H9/02; H03H9/125; H03H9/135; H03H9/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2249835A
Cited
US2452531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |