US2838168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective door plate
Assignee: Individual
•
Filing: 1954-08-11
•
Granted: 1958-06-10
•
Expires: 1974-08-11
Abstract
No abstract record available.
Inventors
- 👤 Charles G Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:25
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/28; E06B7/285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1326370A
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US1650420A
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US2087236A
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US2139377A
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US2359314A
Cited
US2363422A
Cited
US2371985A
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US2547487A
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US2595112A
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US2636297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |