US2927217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring
Assignee: National Research Corp
•
Filing: 1955-04-08
•
Granted: 1960-03-01
•
Expires: 1975-04-08
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Vacca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:24
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/10; G01N15/14; G01N15/1468
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2617593A
Cited
US2699701A
Cited
US2649527A
Cited
US2791695A
Cited
US2784910A
Cited
US2874899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |