Patent US1349761A successfully refreshed from Google Patents.
Patent US2068450A successfully refreshed from Google Patents.
US2673099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calendar
Assignee: Individual
•
Filing: 1951-05-19
•
Granted: 1954-03-23
•
Expires: 1971-05-19
Abstract
No abstract record available.
Inventors
- 👤 James P Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:00
CPC Classifications
B; B42; B42D; B42D5/00; B42D5/04; B42D5/043; B42D5/045; B42D5/041; B42D5/042
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US397540A
Cited
US437058A
Cited
US1159801A
Cited
US1366604A
Cited
US1443092A
Cited
US1786230A
Cited
US2068214A
Cited
GB607845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |