US1837720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making light reflectors
Assignee: AMERICAN GASACCUMULATOR Co
•
Filing: 1930-12-26
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Granted: 1931-12-22
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Expires: 1950-12-26
Abstract
No abstract record available.
Inventors
- 👤 Richard W Luce
- 👤 Leslie M Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:38
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/88; B21D53/883
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) | 1934-12-21 | 1935-06-22 | 1935-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-12-21 | 1939-06-22 | 1939-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-12-21 | 1943-06-22 | 1943-12-22 | $7700.00 | Window Closed / Lapsed |