US2815688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring bar
Assignee: P O MCINTIRE Co
•
Filing: 1954-06-28
•
Granted: 1957-12-10
•
Expires: 1974-06-28
Abstract
No abstract record available.
Inventors
- 👤 Sam J Forbes
- 👤 Paul S Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:34
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; Y; Y10; Y10T; Y10T407/00; Y10T407/14; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/60; Y10T408/62; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8598; Y10T408/85985; Y10T408/85988
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US302831A
Cited
US1002457A
Cited
US1078611A
Cited
US1341565A
Cited
US1668351A
Cited
US2204860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |