US2732491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Output
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:32
CPC Classifications
G; G01; G01R; G01R1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1911362A
Cited
US1811319A
Cited
US1986414A
Cited
US2007992A
Cited
US2011941A
Cited
US1959592A
Cited
US1954311A
Cited
US2030857A
Cited
US2121434A
Cited
US2265637A
Cited
US2450872A
Cited
US2475649A
Cited
US2499410A
Cited
US2550787A
Cited
US2455543A
Cited
US2558282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |