Patent US3537403A successfully refreshed from Google Patents.
US3537403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operator
Assignee: Vapor Corp
•
Filing: 1968-07-12
•
Granted: 1970-11-03
•
Expires: 1988-07-12
Abstract
No abstract record available.
Inventors
- 👤 Kristupas Daugirdas
- 👤 Charles J Jechort Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:27
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/632; E05F15/649; E05F11/00; E05F11/54; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/218; E05Y2201/22; E05Y2201/40; E05Y2201/43; E05Y2201/434; E05Y2201/60; E05Y2201/606; E05Y2201/608; E05Y2201/622; E05Y2201/676; E05Y2400/00; E05Y2400/10; E05Y2400/30; E05Y2400/3013; E05Y2900/00; E05Y2900/50; E05Y2900/51
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) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |