US644279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed attachment for screw or analogous machines.
Assignee: Pratt and Whitney Co Inc
•
Filing: 1899-01-11
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Granted: 1900-02-27
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Expires: 1919-01-11
Abstract
No abstract record available.
Inventors
- 👤 Elbert M Couch
- 👤 Frank Harrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:24
CPC Classifications
B; B23; B23B; B23B11/00; B23Q; B23Q5/00; B23Q5/22; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5178
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) | 1903-02-27 | 1903-08-29 | 1904-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-02-27 | 1907-08-29 | 1908-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-02-27 | 1911-08-29 | 1912-02-28 | $7700.00 | Window Closed / Lapsed |