US3540585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling and testing spray controls
Assignee: Polyplaste H Rolf Spranger KG
•
Filing: 1968-05-16
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Granted: 1970-11-17
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Expires: 1988-05-16
Abstract
No abstract record available.
Inventors
- 👤 Helmut Spranger
- 👤 Erhard Schreiber
- 👤 Alexander Frenzel
- 👤 Hans-Joachim Eisentraut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:23
CPC Classifications
B; B23; B23P; B23P19/00; B23P19/04; B07; B07C; B07C5/00; B07C5/34; Y; Y10; Y10S; Y10S209/00; Y10S209/92
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) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |