Patent US3239748A successfully refreshed from Google Patents.
US3239748A
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US
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Control apparatus
Assignee: Honeywell Inc
•
Filing: 1961-09-07
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Granted: 1966-03-08
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Expires: 1981-09-07
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Berglund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:36
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/725
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2952762A
Cited
US2510041A
Cited
US2693572A
Cited
US2717382A
Cited
US2717352A
Cited
US2954470A
Cited
US3043965A
Cited
US3042781A
Cited
US3042782A
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US3051815A
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US2984470A
Cited
US3113198A
Cited
US3106684A
Cited
US3155777A
Cited
US3098920A
Cited
US3159737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |