Patent US1993254A successfully refreshed from Google Patents.
US3494243A
Expired / Lapsed
US
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Sealing fastener
Assignee: SPS Technologies LLC
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Filing: 1967-06-28
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Granted: 1970-02-10
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Expires: 1987-06-28
Abstract
No abstract record available.
Inventors
- 👤 Walter H Kleinhenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:34
CPC Classifications
F; F16; F16B; F16B33/00; F16B33/06; F16B23/00; F16B23/0007; F16B23/0023; F16B33/004; Y; Y10; Y10S; Y10S411/00; Y10S411/90; Y10S411/901; Y10S411/902; Y10S411/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3103446A
Cited
US2326455A
Cited
FR1009184A
Cited
FR1069237A
Cited
US2847894A
Cited
US3002770A
Cited
US3060112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |