Patent US1538086A successfully refreshed from Google Patents.
US1538086A
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US
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Machine for cutting plaster board
Assignee: BUTTRESS Manufacturing Co
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Filing: 1921-11-21
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Granted: 1925-05-19
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Expires: 1941-11-21
Abstract
No abstract record available.
Inventors
- 👤 George A Buttress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:43
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/14; B28B11/16; B28B11/163; B23; B23D; B23D47/00; B23D47/04; B27; B27B; B27B25/00; B27B25/04; B27B5/00; B27B5/02; B27B5/04; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18152; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2094; Y10T83/2096; Y10T83/21; Y10T83/465; Y10T83/4699; Y10T83/4702; Y10T83/4757; Y10T83/647; Y10T83/6475; Y10T83/664; Y10T83/748; Y10T83/7487; Y10T83/7493; Y10T83/768; Y10T83/7755; Y10T83/7763
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) | 1928-05-18 | 1928-11-17 | 1929-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-05-18 | 1932-11-17 | 1933-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-05-18 | 1936-11-17 | 1937-05-19 | $7700.00 | Window Closed / Lapsed |