Patent US1348304A successfully refreshed from Google Patents.
US1348304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thread-milling hob
Assignee: Pratt and Whitney Co Inc
•
Filing: 1919-02-01
•
Granted: 1920-08-03
•
Expires: 1939-02-01
Abstract
No abstract record available.
Inventors
- 👤 Muller Friederich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:49
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/32; Y; Y10; Y10T; Y10T407/00; Y10T407/17; Y10T407/1715; Y10T407/172
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1923-08-03 | 1924-02-02 | 1924-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-08-03 | 1928-02-02 | 1928-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-08-03 | 1932-02-02 | 1932-08-03 | $7700.00 | Window Closed / Lapsed |