Patent US2758754A successfully refreshed from Google Patents.
US2758754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injector
Assignee: California Research LLC
•
Filing: 1951-07-12
•
Granted: 1956-08-14
•
Expires: 1971-07-12
Abstract
No abstract record available.
Inventors
- 👤 William R Postlewaite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:04
CPC Classifications
G; G21; G21H; G21H5/00; G21H5/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2937
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
AN INJECTOR FOR A RADIOACTIVE SUBSTANCE, COMPRISING A RESERVOIR TO CONTAIN SAID SUBSTANCE, A SHIELD SURROUNDING SAID RESERVOIR AND SPACED APART THEREFROM TO PROVIDE A CHAMBER BETWEEN SAID RESERVOIR AND SAID SHIELD, MEANS TO MAINTAIN SAID CHAMBER AND SAID RESERVOIR AT ATMOSPHERIC PRESSURE, A MEASURING GAUGE FOR SAID SUBSTANCE CONNECTED TO SAID RESERVOIR, MEANS COMMUNICATING WITH SAID
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |