Patent US2849903A successfully refreshed from Google Patents.
US2849903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Type knurling machine
Assignee: Individual
•
Filing: 1953-12-29
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Granted: 1958-09-02
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Expires: 1973-12-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Dorr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:05
CPC Classifications
B; B41; B41N; B41N3/00; Y; Y10; Y10S; Y10S72/00; Y10S72/703
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US278169A
Cited
US299984A
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US507572A
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US622987A
Cited
GB190814725A
Cited
US978754A
Cited
US1547250A
Cited
US2569522A
Cited
US2569350A
Cited
US2711131A
Cited
US2716940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |