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US2831374A
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Index mechanism
Assignee: Gleason Works
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Filing: 1955-05-02
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Granted: 1958-04-22
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Expires: 1975-05-02
Abstract
No abstract record available.
Inventors
- 👤 Norman W Fowler
- 👤 Robert F Pigage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:03
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q16/02; B23Q16/04; B23Q16/06; B23Q16/065; Y; Y10; Y10T; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1441; Y10T74/19; Y10T74/19555
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |