US2674451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window sash operating mechanism
Assignee: Individual
•
Filing: 1950-06-05
•
Granted: 1954-04-06
•
Expires: 1970-06-05
Abstract
No abstract record available.
Inventors
- 👤 Michael J Tracy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:14
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/50; E06B3/5009; E06B3/5018
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US926094A
Cited
US1101257A
Cited
US1647262A
Cited
US1659103A
Cited
US2327246A
Cited
US2293944A
Cited
US2267140A
Cited
US2442363A
Cited
US2519234A
Cited
US2478044A
Cited
US2528953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |