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Patent US2940312A successfully refreshed from Google Patents.
US2940312A
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Work measuring device particularly adapted to detecting very small and rapid movements
Assignee: Pharmacia and Upjohn Co
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Filing: 1955-10-10
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Granted: 1960-06-14
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Expires: 1975-10-10
Abstract
No abstract record available.
Inventors
- 👤 Smith William Ralph
- 👤 Chester C Sperry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:17
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/103; A61B5/11; A61B5/1104; A61B5/1105; A61B2503/00; A61B2503/40; A61B2503/42; A61B2562/00; A61B2562/02; A61B2562/0233; A61B5/45; A61B5/4519
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |