US3458845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinked electrical resistance humidity sensing element
Assignee: Johnson Controls International Inc
•
Filing: 1967-11-08
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Granted: 1969-07-29
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Expires: 1987-11-08
Abstract
No abstract record available.
Inventors
- 👤 Paul E Thoma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:18
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/12; G01N27/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2728831A
Cited
US2722586A
Cited
US2937524A
Cited
US3093502A
Cited
US3301057A
Cited
US3295088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |