US3500502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold for the production of boots of rubber or plastics material
Assignee: Desma Werke GmbH
•
Filing: 1967-10-04
•
Granted: 1970-03-17
•
Expires: 1987-10-04
Abstract
No abstract record available.
Inventors
- 👤 Kurt M Santelmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:34
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/0009; B29D35/0018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL272620A
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FR979571A
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US791649A
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US2830324A
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US2985919A
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GB881641A
Cited
US3287767A
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US3128505A
Cited
US3302243A
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US3366995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |