US2986641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for evacuating waste hydrogen from a chamber in which neutrons are produced
Assignee: Seismograph Service Corp
•
Filing: 1957-08-08
•
Granted: 1961-05-30
•
Expires: 1977-08-08
Abstract
No abstract record available.
Inventors
- 👤 Antonius Mathias J F Michels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:04
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/22; H01J17/26; H05; H05H; H05H3/00; H05H3/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1213470A
Cited
US1174631A
Cited
US1871226A
Cited
GB573018A
Cited
US2489436A
Cited
US2609382A
Cited
US2735019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |