US3501244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning attachment for ball point pen
Assignee: Individual
•
Filing: 1968-08-14
•
Granted: 1970-03-17
•
Expires: 1988-08-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Kulka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:54
CPC Classifications
B; B43; B43K; B43K13/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE100123C
Cited
US426324A
Cited
US588902A
Cited
GB190123207A
Cited
US737085A
Cited
US1218741A
Cited
US1793450A
Cited
GB386822A
Cited
US2963337A
Cited
US3402984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |