Patent US2738559A successfully refreshed from Google Patents.
US2738559A
Expired / Lapsed
US
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Sealing devices
Assignee: Individual
•
Filing: 1950-03-08
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Granted: 1956-03-20
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Expires: 1970-03-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Morgan L Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:32
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; E06B7/22; E06B7/23; E06B7/2301; E06B3/00; E06B3/70; E06B2003/7044; E06B3/32; E06B3/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1081692A
Cited
US2070373A
Cited
US1953592A
Cited
CH203013A
Cited
US2294792A
Cited
US2294101A
Cited
US2552752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |