US2889899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal door construction
Assignee: Burch Co
•
Filing: 1953-06-30
•
Granted: 1959-06-09
•
Expires: 1973-06-30
Abstract
No abstract record available.
Inventors
- 👤 Henry J Bianco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:44
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/96; E06B3/964; E06B3/9649; E06B3/70; E06B3/72; E06B3/725; E06B3/726
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1366060A
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US1101745A
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US1574493A
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US2336999A
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US2611934A
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US2614666A
Cited
GB630237A
Cited
US2640567A
Cited
US2605869A
Cited
US2671539A
Cited
US2682325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |