US2967249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servomechanism for tracking a heat source
Assignee: Hoffman Electronics Corp
•
Filing: 1959-01-27
•
Granted: 1961-01-03
•
Expires: 1979-01-27
Abstract
No abstract record available.
Inventors
- 👤 Robert W Quirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:52
CPC Classifications
G; G05; G05G; G05G19/00; F; F24; F24S; F24S30/00; F24S30/40; F24S30/45; F24S30/455; F24S50/00; F24S50/20; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2155402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |