US3447569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure responsive control device
Assignee: Robertshaw Controls Co
•
Filing: 1967-02-27
•
Granted: 1969-06-03
•
Expires: 1987-02-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth G Kreuter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:51
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/0611; G05D16/0613; F; F16; F16K; F16K31/00; F16K31/12; F16K31/126; F16K7/00; F16K7/20; G05D16/063; G05D16/0644; G05D16/0647; G05D16/065
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA595882A
Cited
US2401237A
Cited
FR1102777A
Cited
US3237914A
Cited
US3251386A
Cited
US3322142A
Cited
US3368787A
Cited
US3354897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |