US2779028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush control unit
Assignee: Radiator Specialty Co
•
Filing: 1955-02-02
•
Granted: 1957-01-29
•
Expires: 1975-02-02
Abstract
No abstract record available.
Inventors
- 👤 Frank F Branch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:06
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/304; E03D1/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1201416A
Cited
US2142393A
Cited
US2190160A
Cited
US2534705A
Cited
US2598967A
Cited
US2643393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |