US2770695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler control mechanism
Assignee: McDonnell and Miller Inc
•
Filing: 1954-01-21
•
Granted: 1956-11-13
•
Expires: 1974-01-21
Abstract
No abstract record available.
Inventors
- 👤 Leopold J Kmiecik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:19
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/12; F; F22; F22D; F22D5/00; F22D5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1338987A
Cited
US1985659A
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US1952897A
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US2244131A
Cited
US2646067A
Cited
US2580759A
Cited
US2583952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |