US2508901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming building blocks
Assignee: LOCKE Inc
•
Filing: 1944-10-09
•
Granted: 1950-05-23
•
Expires: 1964-10-09
Abstract
No abstract record available.
Inventors
- 👤 Russell G Bellezza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:45
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/26; B28B1/261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191406699A
Cited
US2015681A
Cited
US2070672A
Cited
GB479157A
Cited
US2106415A
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US2224488A
Cited
US2226220A
Cited
US2277507A
Cited
US2277543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |