Patent US2428731A successfully refreshed from Google Patents.
US2428731A
Expired / Lapsed
US
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Weather stripping
Assignee: Individual
•
Filing: 1943-10-21
•
Granted: 1947-10-07
•
Expires: 1963-10-21
Abstract
No abstract record available.
Inventors
- 👤 Abrams George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:16
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; E06B7/22; E06B7/23; E06B7/2305; E06B7/2307; E06B7/231
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1259117A
Cited
US1495727A
Cited
US1545694A
Cited
GB231739A
Cited
FR638737A
Cited
FR35722E
Cited
DE581038C
Cited
US2095669A
Cited
FR821238A
Cited
US2294792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |