Patent US2938690A successfully refreshed from Google Patents.
US2938690A
Expired / Lapsed
US
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Instrument clamping assembly
Assignee: Individual
•
Filing: 1954-04-26
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Granted: 1960-05-31
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Expires: 1974-04-26
Abstract
No abstract record available.
Inventors
- 👤 Alfred B Castle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:05
CPC Classifications
F; F16; F16B; F16B2/00; F16B2/02; F16B2/06; F16B2/08; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1427; Y10T24/1441; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18792
Claims Analysis
Total Claims: 0
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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) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |