US3397819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas replenishment device
Assignee: Raytheon Co
•
Filing: 1967-07-19
•
Granted: 1968-08-20
•
Expires: 1987-07-19
Abstract
No abstract record available.
Inventors
- 👤 Robert B Hodge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:55
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/036; H01J; H01J9/00; H01J9/38; H01J9/395
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3123253A
Cited
US2103194A
Cited
US2587191A
Cited
US2681053A
Cited
US3135090A
Cited
US3189227A
Cited
US3268184A
Cited
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 |