US2272852A
Expired / Lapsed
US
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Setting or clamping screw
Assignee: Individual
•
Filing: 1940-06-28
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Granted: 1942-02-10
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Expires: 1960-06-28
Abstract
No abstract record available.
Inventors
- 👤 Albert B Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:28
CPC Classifications
B; B01; B01L; B01L9/00; B01L9/50; E; E04; E04G; E04G7/00; E04G7/02; E04G7/06; E04G7/12; E04G7/14; F; F16; F16B; F16B2/00; F16B2/02; F16B2/06; F16B2/065; F16B35/00; F16B35/005; F16B35/04; F16B35/041; F16B35/044; F16B7/00; F16B7/04; F16B7/044; F16B7/048; F16B7/0493
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-02-09 | 1945-08-11 | 1946-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-09 | 1949-08-11 | 1950-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-09 | 1953-08-11 | 1954-02-10 | $7700.00 | Window Closed / Lapsed |