US2987801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broach
Assignee: Nat Broach & Machinery Co
•
Filing: 1958-10-06
•
Granted: 1961-06-13
•
Expires: 1978-10-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Psenka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:30
CPC Classifications
B; B23; B23F; B23F21/00; B23F21/26; B23D; B23D43/00; B23D43/02; Y; Y10; Y10T; Y10T407/00; Y10T407/16; Y10T407/1628; Y10T407/1642
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806552A
Cited
US1197132A
Cited
FR22248E
Cited
US1935774A
Cited
US1969977A
Cited
GB414331A
Cited
GB592888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |