US3453151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermocouple with leak detector
Assignee: Park Chemical Co
•
Filing: 1965-03-09
•
Granted: 1969-07-01
•
Expires: 1985-03-09
Abstract
No abstract record available.
Inventors
- 👤 Charles R Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:29
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/08; G01K1/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE484071C
Cited
US2019695A
Cited
GB543597A
Cited
GB547840A
Cited
US2446760A
Cited
US2519941A
Cited
US2660061A
Cited
US2793815A
Cited
US2844637A
Cited
US2802894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |