US1433971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for preventing air bubbles in laminated rubber articles
Assignee: Individual
•
Filing: 1920-09-13
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Granted: 1922-10-31
•
Expires: 1940-09-13
Abstract
No abstract record available.
Inventors
- 👤 Roberts Fred Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:47
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/006; B29C37/0064; B29D; B29D30/00; B29D30/06; B29D30/52; B29K; B29K2021/00; B29L; B29L2009/00; Y; Y10; Y10S; Y10S156/00; Y10S156/906; Y10S425/00; Y10S425/037; Y10T; Y10T156/00; Y10T156/12
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) | 1925-10-30 | 1926-05-01 | 1926-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-10-30 | 1930-05-01 | 1930-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-10-30 | 1934-05-01 | 1934-10-31 | $7700.00 | Window Closed / Lapsed |