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US3480255A
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Plural winch lifting unit
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US3310291A
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Tension responsive power driven winch
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US3268999A
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Method for raising a stiff horizontal frame
|
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US3434816A
|
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Gasholder provided with mechanism for preventing wrinkling of the flexible curtain seal incorporated therein
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US3438758A
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Curtain clamping structure for gasholders
|
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US3436196A
|
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Dry-seal pressure-type gasholder provided with hook lift structures
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US3434815A
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Dry-seal pressure-type gasholders provided with stretch resistant seal structures and tensioned fender structures
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US3252688A
|
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Apparatus for raising a stiff horizontal frame
|
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US3325041A
|
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Laminated seal structure for storage tanks employing floating roofs
|
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US3158280A
|
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Floating roof anti-rotational mechanisms
|
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US3119510A
|
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Sealing mechanisms for floating roofs for storage tanks
|
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US3031800A
|
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Metal storage tank
|
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US2991901A
|
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Hydraulically actuated fabric seal with pull-down and push-out mechanism
|
|
US3001273A
|
|
Apparatus and methods for erecting suspension roofs
|
|
US2931534A
|
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Automatic emergency drain mechanisms for floating roofs
|
|
US2805631A
|
|
Suspension roof structure for storage tanks
|
|
US2808958A
|
|
Automatic emergency drain for floating tank roof
|
|
US2882137A
|
|
Piston for gas storage tank
|
|
US2802591A
|
|
Pontoon type floating tank roof
|
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US2838199A
|
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Floating roof for resisting air or gas shock waves
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