US3471036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brick stacking machine
Assignee: Builders Equipment Co
•
Filing: 1967-08-28
•
Granted: 1969-10-07
•
Expires: 1987-08-28
Abstract
No abstract record available.
Inventors
- 👤 Paul M Thomas
- 👤 Lawrence W Wright
- 👤 Eugene E Crile
- 👤 Leon H Tolleson
- 👤 Jesse N Parmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:10
CPC Classifications
B; B65; B65G; B65G57/00; B65G57/02; B65G57/03; B65G57/035; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/102; Y10S414/103; Y10S414/105; Y10S414/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3128890A
Cited
US2397720A
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US2658614A
Cited
US2710696A
Cited
GB914957A
Cited
US3262594A
Cited
US3270897A
Cited
US3169646A
Cited
US3260379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |