US2789267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for testing pulse generators
Assignee: AT&T Inc
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Filing: 1953-05-26
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Granted: 1957-04-16
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Expires: 1973-05-26
Abstract
No abstract record available.
Inventors
- 👤 Dick H Beal
- 👤 Richard C Pomeroy
- 👤 Gordon H Robertson
- 👤 Daniel M Zinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:00
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; G01R31/282; G01R31/2822; G01R31/2824
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |