US3499600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary compressor
Assignee: Whirlpool Corp
•
Filing: 1968-03-21
•
Granted: 1970-03-10
•
Expires: 1988-03-21
Abstract
No abstract record available.
Inventors
- 👤 Ralph Mcgregor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/10; F01C21/104; F01C21/106; F04; F04C; F04C18/00; F04C18/30; F04C18/34; F04C18/344; F04C18/3441; F04C29/00; F04C29/02; F04C29/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1114046A
Cited
US1719135A
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US1719134A
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US1742731A
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US1781073A
Cited
US1967033A
Cited
US2233082A
Cited
US2623365A
Cited
US2877946A
Cited
US3285504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |