US2898971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller expanding and peening tool
Assignee: Mcdowell Manufacturing Co
•
Filing: 1955-05-11
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Granted: 1959-08-11
•
Expires: 1975-05-11
Abstract
No abstract record available.
Inventors
- 👤 Gustav A Hempel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:14
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/08; B21D39/18; B21D39/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994; Y10T29/53; Y10T29/53709; Y10T29/53717; Y10T29/53722
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1444395A
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US1938194A
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US1998047A
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US1881867A
Cited
US1930825A
Cited
US2266796A
Cited
GB560205A
Cited
US2499630A
Cited
US2690783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |