US2874597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Micrometric boring head
Assignee: Individual
•
Filing: 1956-11-29
•
Granted: 1959-02-24
•
Expires: 1976-11-29
Abstract
No abstract record available.
Inventors
- 👤 Burton E Bach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:32
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03403; B23B29/03417; Y; Y10; Y10T; Y10T408/00; Y10T408/21; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8593; Y10T408/8598; Y10T408/85995; Y10T82/00; Y10T82/25; Y10T82/2585
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1684772A
Cited
US1960124A
Cited
US2278631A
Cited
US2438607A
Cited
US2564460A
Cited
FR1107314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |