US1642187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light projector
Assignee: ARTHUR C MESSNER
•
Filing: 1926-03-26
•
Granted: 1927-09-13
•
Expires: 1946-03-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank G Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:06
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/06; A61B1/07; A61B1/0661; A61B1/0669
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) | 1930-09-12 | 1931-03-14 | 1931-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-09-12 | 1935-03-14 | 1935-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-09-12 | 1939-03-14 | 1939-09-13 | $7700.00 | Window Closed / Lapsed |