US3393811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for dividing hardened piles of stone
Assignee: Individual
•
Filing: 1965-02-16
•
Granted: 1968-07-23
•
Expires: 1985-02-16
Abstract
No abstract record available.
Inventors
- 👤 Dankelmeier Wilhelm
- 👤 Schumacher Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:58
CPC Classifications
B; B28; B28B; B28B13/00; B28B13/04; B65; B65G; B65G67/00; B65G67/02; B65G67/04; B65G67/14; B65G69/00; F; F27; F27D; F27D3/00; F27D3/0021; F27D2003/0001; F27D2003/0002; F27D3/12; F27D2003/125; F27D99/00; F27D2099/0083; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |