US3476609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell module
Assignee: RTX Corp
•
Filing: 1967-03-30
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Granted: 1969-11-04
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Expires: 1987-03-30
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Gelting
- 👤 Anthony J Fiorentino
- 👤 Arthur C Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:35
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/24; H01M8/241; H01M8/242; H01M8/2457; H01M8/2465; H01M8/2484; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
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) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |