US2638642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing strip
Assignee: Bridgeport Fabrics Inc
•
Filing: 1948-10-06
•
Granted: 1953-05-19
•
Expires: 1968-10-06
Abstract
No abstract record available.
Inventors
- 👤 Spraragen Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:57
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; E06B7/22; E06B7/23; E06B7/2318; E06B7/2314
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1799904A
Cited
US2116846A
Cited
US2161648A
Cited
US2215515A
Cited
US2193719A
Cited
US2227581A
Cited
US2239269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |