US2938757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grooved refractory pulley
Assignee: Individual
•
Filing: 1959-01-02
•
Granted: 1960-05-31
•
Expires: 1979-01-02
Abstract
No abstract record available.
Inventors
- 👤 Alphonse F Pieper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:23
CPC Classifications
F; F16; F16C; F16C35/00; F16C35/04; F16C35/06; F16C35/07; F16C35/077; F16B; F16B39/00; F16B39/22; F16B39/28; F16H; F16H7/00; F16H7/18; F16B35/00; F16B35/04; F16B35/041; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2361/00; F16C2361/63
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) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |