Patent US2767923A successfully refreshed from Google Patents.
US2767923A
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US
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Modulating and shut-off control apparatus
Assignee: Milwaukee Gas Specialty Co
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Filing: 1953-07-20
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Granted: 1956-10-23
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Expires: 1973-07-20
Abstract
No abstract record available.
Inventors
- 👤 Russell B Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:33
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/04; F23N5/045; F23N2239/00; F23N2239/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US360823A
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US1186770A
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US1121635A
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US1265765A
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US1754349A
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US1827430A
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US2227447A
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US2214558A
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US2349443A
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US2447894A
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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) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |