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US1280323A
Expired / Lapsed
US
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Pencil-sharpener.
Assignee: AUTOMATIC PENCIL SHARPENER Co
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Filing: 1915-12-02
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Granted: 1918-10-01
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Expires: 1935-12-02
Abstract
No abstract record available.
Inventors
- 👤 Charles C Spengler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:28
CPC Classifications
B; B43; B43L; B43L23/00; B43L23/02; B43L23/04; Y; Y10; Y10T; Y10T292/00; Y10T292/85; Y10T292/865
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1921-09-30 | 1922-04-01 | 1922-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-09-30 | 1926-04-01 | 1926-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-09-30 | 1930-04-01 | 1930-10-01 | $7700.00 | Window Closed / Lapsed |