US1503665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for making annular sheets of rubber
Assignee: Individual
•
Filing: 1919-12-29
•
Granted: 1924-08-05
•
Expires: 1939-12-29
Abstract
No abstract record available.
Inventors
- 👤 Roberts Fred Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:46
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/22; B29C43/24; B29C43/28; B30; B30B; B30B11/00; B30B11/16; B30B11/165; B29K; B29K2021/00; B29L; B29L2023/00; B29L2023/24; B29L2023/245
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1927-08-05 | 1928-02-04 | 1928-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-08-05 | 1932-02-04 | 1932-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-08-05 | 1936-02-04 | 1936-08-05 | $7700.00 | Window Closed / Lapsed |