Patent BE554767A successfully refreshed from Google Patents.
US3465425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of gap or labyrinth seals
Assignee: Individual
•
Filing: 1966-07-22
•
Granted: 1969-09-09
•
Expires: 1986-07-22
Abstract
No abstract record available.
Inventors
- 👤 Reinhold Leidenfrost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:41
CPC Classifications
B; B21; B21H; B21H1/00; B21H1/06; F; F16; F16J; F16J15/00; F16J15/44; F16J15/447; F16J15/4472; F16J15/4474; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49861; Y10T29/4998; Y10T29/49988; Y10T29/49991
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1521483A
Cited
US2027962A
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US2476728A
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US2458988A
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US2781210A
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US2714746A
Cited
US3158923A
Cited
US3264392A
Cited
US3345077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |