Patent US2728388A successfully refreshed from Google Patents.
US2728388A
Expired / Lapsed
US
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Construction for mounting a pair of panels and a grill in a metal door
Assignee: KAUFMANN Corp
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Filing: 1953-01-21
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Granted: 1955-12-27
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Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Marshall V Noecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:19
CPC Classifications
E; E06; E06B; E06B5/00; E06B5/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US834968A
Cited
US1512853A
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US1715208A
Cited
US1800800A
Cited
US2132217A
Cited
US2216332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |