Patent US2477934A successfully refreshed from Google Patents.
US2477934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring machine
Assignee: Individual
•
Filing: 1945-09-15
•
Granted: 1949-08-02
•
Expires: 1965-09-15
Abstract
No abstract record available.
Inventors
- 👤 George H Leland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:13
CPC Classifications
B; B23; B23B; B23B39/00; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/173; Y10T408/47; Y10T408/476; Y10T408/55; Y10T408/561; Y10T408/5623
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1261432A
Cited
US1510771A
Cited
US1812533A
Cited
US2154038A
Cited
US2326498A
Cited
US2380314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |