US2000845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window of metal or similar material in metal wall
Assignee: Koninklijke Philips NV
•
Filing: 1931-02-11
•
Granted: 1935-05-07
•
Expires: 1951-02-11
Abstract
No abstract record available.
Inventors
- 👤 Jonas Gottfried Bruno
- 👤 Esseling August Therman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:08
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/02; H01J5/18
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) | 1938-05-06 | 1938-11-05 | 1939-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-05-06 | 1942-11-05 | 1943-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-05-06 | 1946-11-05 | 1947-05-07 | $7700.00 | Window Closed / Lapsed |