US1568641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment for automatic lathes
Assignee: Pratt and Whitney Co Inc
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Filing: 1922-04-08
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Granted: 1926-01-05
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Expires: 1942-04-08
Abstract
No abstract record available.
Inventors
- 👤 John J Thacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:13
CPC Classifications
B; B23; B23B; B23B7/00; B23B7/12; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5168; Y10T29/5171; Y10T82/00; Y10T82/13; Y10T82/135; Y10T82/14; Y10T82/141; Y10T82/25; Y10T82/2531; Y10T82/2541; Y10T82/2543; Y10T82/2572; Y10T82/2574
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) | 1929-01-04 | 1929-07-06 | 1930-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-01-04 | 1933-07-06 | 1934-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-01-04 | 1937-07-06 | 1938-01-05 | $7700.00 | Window Closed / Lapsed |