US2789437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive apparatus
Assignee: FED MACHINE AND WELDER Co
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Filing: 1955-05-11
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Granted: 1957-04-23
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Expires: 1975-05-11
Abstract
No abstract record available.
Inventors
- 👤 William F Longfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:31
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/12; F; F16; F16D; F16D48/00; F16D48/06; F16D48/062; F16D67/00; F16D67/02; F16D67/04; F16D2500/00; F16D2500/30; F16D2500/304; F16D2500/3041; F16D2500/30415; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18208; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19433
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) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |