Patent US2087928A successfully refreshed from Google Patents.
US2087928A
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US
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Assignee: LEECHGRIP Co
•
Filing: 1936-03-21
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Granted: 1937-07-27
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Expires: 1956-03-21
Abstract
No abstract record available.
Inventors
- 👤 Herman J Spencer
- 👤 Robert M Jenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:15
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/34
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) | 1940-07-26 | 1941-01-25 | 1941-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-26 | 1945-01-25 | 1945-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-26 | 1949-01-25 | 1949-07-27 | $7700.00 | Window Closed / Lapsed |