US2809566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key duplicating machine
Assignee: NAT KEY Co
•
Filing: 1954-06-11
•
Granted: 1957-10-15
•
Expires: 1974-06-11
Abstract
No abstract record available.
Inventors
- 👤 David W Orchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:29
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/28; B23C3/35; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/300952
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1105769A
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US1895849A
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DE604833C
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US2176106A
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US2167008A
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US2329269A
Cited
US2282165A
Cited
US2452268A
Cited
US2645978A
Cited
US2682809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |