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Patent US1481983A successfully refreshed from Google Patents.
US1481983A
Expired / Lapsed
US
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Machine for counterboring nuts
Assignee: G F BRIGHTMAN
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Filing: 1921-10-28
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Granted: 1924-01-29
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Expires: 1941-10-28
Abstract
No abstract record available.
Inventors
- 👤 Harrison M Brightman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:38
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/16; B23B39/161; B23B39/167; Y; Y10; Y10S; Y10S470/00; Y10S470/902; Y10T; Y10T408/00; Y10T408/52; Y10T408/54; Y10T408/545; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1441; Y10T74/18; Y10T74/18528; Y10T74/19; Y10T74/1987; Y10T74/19879
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) | 1927-01-28 | 1927-07-30 | 1928-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-01-28 | 1931-07-30 | 1932-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-01-28 | 1935-07-30 | 1936-01-29 | $7700.00 | Window Closed / Lapsed |