US3451614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacity control means for rotary compressors
Assignee: Frick Co Inc
•
Filing: 1967-06-14
•
Granted: 1969-06-24
•
Expires: 1987-06-14
Abstract
No abstract record available.
Inventors
- 👤 Roy B Tosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:18
CPC Classifications
F; F04; F04C; F04C28/00; F04C28/10; F04C28/14; F04C28/24; F04C28/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23086E
Cited
GB420501A
Cited
US3120814A
Cited
US3135460A
Cited
US3334546A
Cited
US3381891A
Cited
US3295752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |