US1514751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum-tube oscillator chronometer
Assignee: AT&T Inc
•
Filing: 1920-08-24
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Granted: 1924-11-11
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Expires: 1940-08-24
Abstract
No abstract record available.
Inventors
- 👤 Wold Peter Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:33
CPC Classifications
G; G04; G04F; G04F5/00; G04F5/10; G04C; G04C13/00; G04C13/08; G04C13/14; Y; Y10; Y10T; Y10T24/00; Y10T24/16; Y10T24/1608; Y10T24/1636
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-11-11 | 1928-05-12 | 1928-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-11-11 | 1932-05-12 | 1932-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-11-11 | 1936-05-12 | 1936-11-11 | $7700.00 | Window Closed / Lapsed |