US2489160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doorknob and method of making the same
Assignee: KWIKSET LOCKS Inc
•
Filing: 1947-10-20
•
Granted: 1949-11-22
•
Expires: 1967-10-20
Abstract
No abstract record available.
Inventors
- 👤 Schoepe Adolf
- 👤 Albert S Lord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:31
CPC Classifications
E; E05; E05B; E05B1/00; E05B1/0007; A; A47; A47B; A47B95/00; A47B95/02; A47B2095/028; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49599; Y10T292/00; Y10T292/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US302046A
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US1059659A
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US1165089A
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US1597613A
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US1724342A
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US1706598A
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US1798527A
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US2148191A
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US2326646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |