US2774016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic control device
Assignee: Milwaukee Gas Specialty Co
•
Filing: 1952-08-26
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Granted: 1956-12-11
•
Expires: 1972-08-26
Abstract
No abstract record available.
Inventors
- 👤 Russell B Matthews
- 👤 John H Thornbery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:18
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/04; F16K31/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US390802A
Cited
US428650A
Cited
US1767058A
Cited
US1693135A
Cited
US1979127A
Cited
US2334584A
Cited
GB584543A
Cited
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 |