US3397548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for supplying a gaseous product to meet a variable demand
Assignee: Sulzer AG
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Filing: 1966-04-20
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Granted: 1968-08-20
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Expires: 1986-04-20
Abstract
No abstract record available.
Inventors
- 👤 Ergenc Sahabettin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:01
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/044; F25J3/04151; F25J3/04187; F25J3/04218; F25J3/04248; F25J3/04333; F25J3/04351; F25J3/04357; F25J3/04472; F25J3/04496; F25J3/04503; F25J3/04509; F25J2290/00; F25J2290/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |