US2948366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal door structure
Assignee: Fenestra Inc
•
Filing: 1957-06-25
•
Granted: 1960-08-09
•
Expires: 1977-06-25
Abstract
No abstract record available.
Inventors
- 👤 Clyde W Kelly
- 👤 Donald J Mckinnon
- 👤 Joseph F Heintzel
- 👤 Jr Arthur C Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:41
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/70; E06B3/82; E06B3/822
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1680538A
Cited
US1955181A
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US1860438A
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US1917871A
Cited
US2304126A
Cited
US2427393A
Cited
US2482592A
Cited
US2677443A
Cited
US2589864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |