US2704342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid level actuated follow-up mechanism
Assignee: Robertshaw Controls Co
•
Filing: 1951-04-13
•
Granted: 1955-03-15
•
Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
- 👤 Fielden John Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:19
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/24; G01F23/245
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1838084A
Cited
DE620845C
Cited
US2032016A
Cited
US2354945A
Cited
US2357745A
Cited
US2359927A
Cited
US2363690A
Cited
US2497051A
Cited
US2437661A
Cited
US2619620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-14 | 1958-09-13 | 1959-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-14 | 1962-09-13 | 1963-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-14 | 1966-09-13 | 1967-03-15 | $7700.00 | Window Closed / Lapsed |