US3416985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making a gas transfer device
Assignee: General Electric Co
•
Filing: 1967-06-30
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Granted: 1968-12-17
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Expires: 1987-06-30
Abstract
No abstract record available.
Inventors
- 👤 Dounoucos Angelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:16
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D63/00; B01D63/08; B01D2313/00; B01D2313/14; B01D2319/00; B01D2319/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/16
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) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |