US2549978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Schmidt television projector housing having object surface adjustability in three mutually perpendicular directions
Assignee: Hartford National Bank and Trust Co
•
Filing: 1947-01-11
•
Granted: 1951-04-24
•
Expires: 1967-01-11
Abstract
No abstract record available.
Inventors
- 👤 Kuperus Jan
- 👤 Pieter Martinus Van Alphen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:31
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/894
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1138848A
Cited
US1273994A
Cited
US1400227A
Cited
US1543230A
Cited
US1792832A
Cited
FR841458A
Cited
US2273801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |