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US2650308A
Expired / Lapsed
US
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Method of and apparatus foe ascer
Assignee: —
•
Filing: —
•
Granted: 1953-08-25
•
Expires: 1970-08-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:17
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/12; A61B6/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB353426A
Cited
US1396920A
Cited
US2344823A
Cited
US2523050A
Cited
US2563451A
Cited
US1904234A
Cited
US1937433A
Cited
US2293324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |