US2773649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit-controlling device
Assignee: Milwaukee Gas Specialty Co
•
Filing: 1954-02-19
•
Granted: 1956-12-11
•
Expires: 1974-02-19
Abstract
No abstract record available.
Inventors
- 👤 Adolph J Hilgert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:49
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/06; F23N5/067; F23N5/10; F23N5/107; F23N2235/00; F23N2235/12; F23N2235/14; F23N2235/18; F23N2235/24
Claims Analysis
Total Claims: 0
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US2671833A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |