US2973135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for refrigerant compressor
Assignee: Garrett Corp
•
Filing: 1956-12-21
•
Granted: 1961-02-28
•
Expires: 1976-12-21
Abstract
No abstract record available.
Inventors
- 👤 Harold A Greenwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/04; F04D29/00; F04D29/08; F04D29/10; F04D29/14; F04D29/143; F04D29/16; F04D29/161; F04D29/162; F25; F25B; F25B1/00; F25B1/04; F25B1/053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB319020A
Cited
US1935120A
Cited
US2259361A
Cited
US2250714A
Cited
US2342219A
Cited
US2406947A
Cited
US2667150A
Cited
US2775400A
Cited
US2777632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |