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US2661997A
Expired / Lapsed
US
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Friction drawer retainer
Assignee: General Fireproofing Co
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Filing: 1950-03-06
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Granted: 1953-12-08
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Expires: 1970-03-06
Abstract
No abstract record available.
Inventors
- 👤 Rudolph H Wilmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:28
CPC Classifications
B; B63; B63B; B63B29/00; B63B29/02; B63B29/04; B63B29/10; A; A47; A47B; A47B88/00; A47B88/50; A47B88/57
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US538305A
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US628322A
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US1103598A
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US1145925A
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US1846512A
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US1940047A
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US2430141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |