US2637084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: LORENTZEN HARDWARE Manufacturing CORP
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Filing: 1950-07-19
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Granted: 1953-05-05
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Expires: 1970-07-19
Abstract
No abstract record available.
Inventors
- 👤 Hans K Lorentzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:39
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/28; E06B9/30; E06B9/32; E06B9/326; Y; Y10; Y10T; Y10T24/00; Y10T24/38; Y10T24/39; Y10T24/3916; Y10T24/3933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US232151A
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US296981A
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US301825A
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US536965A
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US718570A
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US721686A
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US772913A
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US1082075A
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US1378890A
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US1656667A
Cited
US2174994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |