Patent US2793545A successfully refreshed from Google Patents.
US2793545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for boring oppositely tapering coaxial holes in spaced parallel wall parts
Assignee: Individual
•
Filing: 1954-04-15
•
Granted: 1957-05-28
•
Expires: 1974-04-15
Abstract
No abstract record available.
Inventors
- 👤 Elmore M Benedict
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:45
CPC Classifications
B; B23; B23B; B23B41/00; B23B41/06; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/38; Y10T408/3811; Y10T408/3817; Y10T408/83; Y10T408/85; Y10T408/854; Y10T408/855; Y10T82/00; Y10T82/12; Y10T82/125
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |