Patent US2166923A successfully refreshed from Google Patents.
US2166923A
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Recessing device
Assignee: Atlantic Richfield Co
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Filing: 1938-01-28
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Granted: 1939-07-18
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Expires: 1958-01-28
Abstract
No abstract record available.
Inventors
- 👤 Charles H Woodcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:42
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03432; B23B29/03478; B23C; B23C3/00; B23C3/28; B23C3/34; Y; Y10; Y10T; Y10T29/00; Y10T29/47; Y10T407/00; Y10T407/19; Y10T407/1952; Y10T409/00; Y10T409/30; Y10T409/306664; Y10T409/306776; Y10T409/307168; Y10T74/00; Y10T74/19; Y10T74/1956; Y10T74/19565; Y10T74/1957
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) | 1942-07-17 | 1943-01-16 | 1943-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-07-17 | 1947-01-16 | 1947-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-07-17 | 1951-01-16 | 1951-07-18 | $7700.00 | Window Closed / Lapsed |