Patent US1104989A successfully refreshed from Google Patents.
US1104989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill.
Assignee: Pratt and Whitney Co Inc
•
Filing: 1914-01-15
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Granted: 1914-07-28
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Expires: 1934-01-15
Abstract
No abstract record available.
Inventors
- 👤 Bengt M W Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:03
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B51/0486; B23B51/06; B23B51/063; B23B51/066; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/455; Y10T408/89; Y10T408/905
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) | 1917-07-27 | 1918-01-26 | 1918-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-07-27 | 1922-01-26 | 1922-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-07-27 | 1926-01-26 | 1926-07-28 | $7700.00 | Window Closed / Lapsed |