US2645204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing implement
Assignee: Individual
•
Filing: 1951-04-09
•
Granted: 1953-07-14
•
Expires: 1971-04-09
Abstract
No abstract record available.
Inventors
- 👤 Bross Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:57
CPC Classifications
B; B43; B43K; B43K24/00; B43K24/02; B43K24/023; B43K21/00; B43K21/02; B43K21/04; B43K21/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2563551A
Cited
US1187018A
Cited
US1467282A
Cited
US1729814A
Cited
US1666405A
Cited
US1763188A
Cited
US2303009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |