US2831231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable and collapsible pier mold
Assignee: Individual
•
Filing: 1955-05-17
•
Granted: 1958-04-22
•
Expires: 1975-05-17
Abstract
No abstract record available.
Inventors
- 👤 Erwin C Toensing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:16
CPC Classifications
E; E04; E04G; E04G13/00; E04G13/02; E04G13/021; E02; E02D; E02D5/00; E02D5/22; E02D5/52; E02D5/523; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44291; Y10T24/44496; Y10T24/44513; Y10T24/44521
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US862123A
Cited
US1201613A
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US1291781A
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US1282200A
Cited
US1445907A
Cited
US1374063A
Cited
US1443459A
Cited
FR659935A
Cited
US2093346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |