US2835172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary head milling attachment
Assignee: Kearney and Trecker Corp
•
Filing: 1955-01-13
•
Granted: 1958-05-20
•
Expires: 1975-01-13
Abstract
No abstract record available.
Inventors
- 👤 Orrin W Barker
- 👤 Ralph E Saving
- 👤 Lloyd D Libby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:46
CPC Classifications
B; B23; B23C; B23C1/00; B23C1/12; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5104; Y10T29/5105; Y10T408/00; Y10T408/31; Y10T408/55; Y10T408/561; Y10T408/5612; Y10T408/65; Y10T409/00; Y10T409/30; Y10T409/30448; Y10T409/306664; Y10T409/30756; Y10T409/307672; Y10T409/30784; Y10T409/307952; Y10T409/308232
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US825409A
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US1938362A
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US1903796A
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US2129307A
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US2286821A
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US2275291A
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US2340210A
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US2341061A
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US2372341A
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US2499842A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |