US1827616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of railway and tramway rails
Assignee: FIRM OF MESSRS SANDBERG
•
Filing: 1931-06-10
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Granted: 1931-10-13
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Expires: 1951-06-10
Abstract
No abstract record available.
Inventors
- 👤 Sandberg Christer Peter
- 👤 Sandberg Oscar Frido Alexander
- 👤 Sandberg Nils Percy Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:31
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/04
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) | 1934-10-12 | 1935-04-13 | 1935-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-12 | 1939-04-13 | 1939-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-12 | 1943-04-13 | 1943-10-13 | $7700.00 | Window Closed / Lapsed |