US1280580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medicated pencil.
Assignee: Arthur D Little Inc
•
Filing: 1915-07-10
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Granted: 1918-10-01
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Expires: 1935-07-10
Abstract
No abstract record available.
Inventors
- 👤 Charles E Swett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:53
CPC Classifications
A; A61; A61K; A61K47/00; A61K47/06; A61K47/08; A61K47/10
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 |