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Patent US2617307A successfully refreshed from Google Patents.
US2617307A
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Adjustable lead control
Assignee: Devlieg Bullard Inc
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Filing: 1948-10-14
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Granted: 1952-11-11
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Expires: 1968-10-14
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Drissner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:50
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/02; B23G1/08; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5178; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/1828; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/206
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) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |