US2828832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device on elevators for stopping exactly at floor level
Assignee: Inventio AG
•
Filing: 1955-08-09
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Granted: 1958-04-01
•
Expires: 1975-08-09
Abstract
No abstract record available.
Inventors
- 👤 Spiess Gustav
- 👤 Stutz Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:55
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/34; B66B1/36; B66B1/40; B66B1/24; B66B1/28; B66B1/32
Claims Analysis
Total Claims: 0
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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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |