Patent US3778394A successfully refreshed from Google Patents.
Patent US2998987A successfully refreshed from Google Patents.
US2998987A
Expired / Lapsed
US
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Teflon lip seal
Assignee: Beazer East Inc
•
Filing: 1958-01-30
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Granted: 1961-09-05
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Expires: 1978-01-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest J Taschenberg
- 👤 Theodore C Kuchler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:23
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3284; F16J15/3204; F16J15/3224; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936; Y10S277/937; Y10S417/00; Y10S417/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB678904A
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US2707118A
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US2772900A
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US2742306A
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US2825590A
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US2847236A
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US2857184A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |