US2391972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor
Assignee: HUFFORD MACHINE WORKS Inc
•
Filing: 1944-06-19
•
Granted: 1946-01-01
•
Expires: 1964-06-19
Abstract
No abstract record available.
Inventors
- 👤 Lewis C Hufford
- 👤 Landon R Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:08
CPC Classifications
F; F02; F02B; F02B71/00; F02B71/04; F01; F01B; F01B9/00; F01B9/04; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-12-31 | 1949-07-02 | 1950-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-31 | 1953-07-02 | 1954-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-31 | 1957-07-02 | 1958-01-01 | $7700.00 | Window Closed / Lapsed |