US3452503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and product for confining hydrogen gas
Assignee: Boeing North American Inc
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Filing: 1966-05-10
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Granted: 1969-07-01
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Expires: 1986-05-10
Abstract
No abstract record available.
Inventors
- 👤 Arnold Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:31
CPC Classifications
F; F17; F17C; F17C1/00; F17C1/14; B; B65; B65D; B65D81/00; C; C01; C01B; C01B3/00; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0119; F17C2201/03; F17C2201/032; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0604; F17C2203/0612; F17C2203/0614; F17C2203/0619; F17C2203/0634; F17C2203/0636; F17C2203/0648; F17C2209/00; F17C2209/22; F17C2209/227; F17C2221/00; F17C2221/01; F17C2221/012; F17C2223/00; F17C2223/01; F17C2223/0107; F17C2223/0123; F17C2223/03; F17C2223/035; F17C2223/036; F17C2260/00; F17C2260/01; F17C2260/011; F17C2260/03; F17C2260/035; F17C2260/036; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32
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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |