US1502509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete-pipe-forming machine
Assignee: Individual
•
Filing: 1923-10-03
•
Granted: 1924-07-22
•
Expires: 1943-10-03
Abstract
No abstract record available.
Inventors
- 👤 Samuel G Mactarnaghan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:40
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/02; B28B21/10; B28B21/22; B28B21/24; B28B21/26; Y; Y10; Y10S; Y10S425/00; Y10S425/218
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) | 1927-07-22 | 1928-01-21 | 1928-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-07-22 | 1932-01-21 | 1932-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-07-22 | 1936-01-21 | 1936-07-22 | $7700.00 | Window Closed / Lapsed |