US1870996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for sawing piston rings
Assignee: Wilcox Rich Corp
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Filing: 1929-08-31
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Granted: 1932-08-09
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Expires: 1949-08-31
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Hoern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:44
CPC Classifications
B; B23; B23D; B23D47/00; B23D47/04; B23D47/042; B23D45/00; B23D45/003; B23D47/045; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5127; Y10T29/5128; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/30532; Y10T409/305432; Y10T409/305544; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424
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) | 1935-08-09 | 1936-02-08 | 1936-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-08-09 | 1940-02-08 | 1940-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-08-09 | 1944-02-08 | 1944-08-09 | $7700.00 | Window Closed / Lapsed |