US1783997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of pencils
Assignee: American Lead Pencil Co
•
Filing: 1928-11-13
•
Granted: 1930-12-09
•
Expires: 1948-11-13
Abstract
No abstract record available.
Inventors
- 👤 William H Burden
- 👤 Robert E Friedlein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:23
CPC Classifications
B; B43; B43K; B43K19/00; B43K19/16; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/30532; Y10T409/305432
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1933-12-08 | 1934-06-09 | 1934-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-12-08 | 1938-06-09 | 1938-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-12-08 | 1942-06-09 | 1942-12-09 | $7700.00 | Window Closed / Lapsed |