US2708136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prismatic window structure
Assignee: Individual
•
Filing: 1954-02-15
•
Granted: 1955-05-10
•
Expires: 1974-02-15
Abstract
No abstract record available.
Inventors
- 👤 John R Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:22
CPC Classifications
B; B60; B60J; B60J1/00; B60J1/08; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7153; Y10T70/7424; Y10T70/7435
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |