Patent US4672182A successfully refreshed from Google Patents.
US995997A
Expired / Lapsed
US
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Apparatus for cutting internal and external screw-threads.
Assignee: Individual
•
Filing: 1910-08-01
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Granted: 1911-06-20
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Expires: 1930-08-01
Abstract
No abstract record available.
Inventors
- 👤 Carl Bilhartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:11
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/32; B23Q5/326; Y; Y10; Y10T; Y10T279/00; Y10T279/14; Y10T408/00; Y10T408/68; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8598
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) | 1914-06-19 | 1914-12-19 | 1915-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-06-19 | 1918-12-19 | 1919-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-06-19 | 1922-12-19 | 1923-06-20 | $7700.00 | Window Closed / Lapsed |