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Patent US2181885A successfully refreshed from Google Patents.
US2181885A
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Assignee: Individual
•
Filing: 1938-03-02
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Granted: 1939-12-05
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Expires: 1958-03-02
Abstract
No abstract record available.
Inventors
- 👤 William M Goldsmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:25
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/58; E04B1/5806; E04B1/5818; F; F16; F16B; F16B7/00; F16B7/04; F16B7/044; F16B7/048; F16B7/0493; Y; Y10; Y10T; Y10T403/00; Y10T403/71; Y10T403/7158
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) | 1942-12-04 | 1943-06-05 | 1943-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-12-04 | 1947-06-05 | 1947-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-12-04 | 1951-06-05 | 1951-12-05 | $7700.00 | Window Closed / Lapsed |