US2931927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current hermetic motor compressor
Assignee: Individual
•
Filing: 1956-11-14
•
Granted: 1960-04-05
•
Expires: 1976-11-14
Abstract
No abstract record available.
Inventors
- 👤 Harry H Mcadam
- 👤 Karr J Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:47
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/0042; F04C29/0085; F04C18/00; F04C18/08; F04C18/10; H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US730891A
Cited
US1526613A
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DE643520C
Cited
BE498968A
Cited
US2697192A
Cited
US2669667A
Cited
US2711286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |