US3438289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring machine with vibrationless boring bar
Assignee: Ingersoll Milling Machine Co
•
Filing: 1967-06-08
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Granted: 1969-04-15
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Expires: 1987-06-08
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Kampmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:52
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/02; B23B29/022; Y; Y10; Y10S; Y10S409/00; Y10S409/904; Y10T; Y10T408/00; Y10T408/76; Y10T82/00; Y10T82/25; Y10T82/2552; Y10T82/2562
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2432943A
Cited
US2643554A
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US2671700A
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US3189389A
Cited
US3244028A
Cited
US3382739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |