US3441641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making belts
Assignee: North British Rubber Co Ltd
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Filing: 1966-01-03
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Granted: 1969-04-29
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Albert Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:26
CPC Classifications
B; B29; B29D; B29D29/00; B29D29/08; B29D29/085; B29C; B29C45/00; B29C45/14; B29C45/14631; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/083; B29C70/26; B29C70/68; B29C70/78; B29C70/88; B29C70/887; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/10; B29K2105/101; B29K2313/00; B29L; B29L2031/00; B29L2031/709; B29L2031/7094
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |