US3532399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Labyrinth-sling seal
Assignee: Avco Corp
•
Filing: 1968-10-28
•
Granted: 1970-10-06
•
Expires: 1988-10-28
Abstract
No abstract record available.
Inventors
- 👤 Philip W Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:29
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/80; F16C19/00; F16C19/02; F16C19/04; F16C19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB111897A
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US1739046A
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DE472708C
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US1791584A
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US1905234A
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DE715105C
Cited
US2545916A
Cited
US2598381A
Cited
US2621087A
Cited
US2770506A
Cited
US2868574A
Cited
US2916332A
Cited
GB925292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |