Patent US1244937A successfully refreshed from Google Patents.
US1244937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced core for cement-block molds.
Assignee: Individual
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Filing: 1917-03-10
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Granted: 1917-10-30
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Expires: 1937-03-10
Abstract
No abstract record available.
Inventors
- 👤 Frank Zagelmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:24
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/16; B28B7/168; B29; B29C; B29C45/00; B29C45/17; B29C45/40; B29C45/44
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) | 1920-10-29 | 1921-04-30 | 1921-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-10-29 | 1925-04-30 | 1925-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-10-29 | 1929-04-30 | 1929-10-30 | $7700.00 | Window Closed / Lapsed |