Patent US4796994A successfully refreshed from Google Patents.
US2985872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic device
Assignee: Individual
•
Filing: 1955-02-11
•
Granted: 1961-05-23
•
Expires: 1975-02-11
Abstract
No abstract record available.
Inventors
- 👤 Beltrami Aurelio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:59
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/88; G; G01; G01V; G01V1/00; G01V1/24; G01V1/245; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/12; G05B19/124; G06; G06E; G06E3/00; G06E3/001; G06K; G06K11/00; G05B2219/00; G05B2219/20; G05B2219/23; G05B2219/23201
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2014741A
Cited
US2153178A
Cited
DE760288C
Cited
US2628539A
Cited
US2462263A
Cited
US2561869A
Cited
US2601392A
Cited
US2679644A
Cited
US2747797A
Cited
US2829825A
Cited
US2796598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |