US1335910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced fibrous board and process of producing the same
Assignee: B G DAHLBERG
•
Filing: 1919-04-03
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Granted: 1920-04-06
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Expires: 1939-04-03
Abstract
No abstract record available.
Inventors
- 👤 Treadway B Munroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:13
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/30; D21H27/32; D21H27/34
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) | 1923-04-06 | 1923-10-06 | 1924-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-04-06 | 1927-10-06 | 1928-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-04-06 | 1931-10-06 | 1932-04-06 | $7700.00 | Window Closed / Lapsed |